PHYC 101 exam 3
If a slow stream of water is attracted to a rubber rod, the slow stream of water will ____________________ a positive rod. a. also be attracted to b. be repelled by c. not be affected by
also be attracted to
An opaque object is cyan when illuminated with white light. What color is it when viewed through a magenta transparency? a. yellow b. black c. blue d. green e. red f. magenta g. cyan
blue
An opaque object is magenta when illuminated with white light. What color is it when viewed through a blue transparency? a. magenta b. red c. yellow d. cyan e. green f. blue g. black
blue
What color is a normally blue object when illuminated with cyan light? a. magenta b. yellow c. green d. red e. white f. black g. cyan h. blue
blue
What color is a normally blue object when illuminated with magenta light? a. blue b. red c. green d. black e. magenta f. cyan g. yellow h. white
blue
What color is a normally cyan object when illuminated with magenta light? a. blue b. white c. yellow d. cyan e. red f. green g. magenta h. black
blue
What color is a normally cyan object when illuminated with magenta light? a. green b. blue c. magenta d. black e. yellow f. red g. white h. cyan
blue
What color is a normally magenta object when illuminated with blue light? a. green b. cyan c. white d. yellow e. black f. red g. magenta h. blue
blue
What color is a normally magenta object when illuminated with cyan light? a. cyan b. black c. yellow d. blue e. magenta f. red g. green h. white
blue
What color light is transmitted by a piece of blue glass? a. blue b. cyan c. red d. magenta e. yellow f. green
blue
A sheet of red paper will look black when illuminated with a. yellow light. b. none of these c. cyan light. d. magenta light. e. red light.
cyan light
What color is a normally yellow object when illuminated with green light? a. black b. yellow c. magenta d. white e. cyan f. green g. red h. blue
green
What color is a normally yellow object when illuminated with green light? a. yellow b. white c. green d. red e. blue f. cyan g. magenta h. black
green
What color light is absorbed by a piece of magenta glass? a. green b. cyan c. magenta d. red e. blue f. yellow
green
Light shines on a pane of green glass and a pane of clear glass. The temperature will be higher in the a. Neither it will be the same in each. b. clear glass. c. green glass.
green glass
An insulator differs from a conductor in that an insulator a. has more energy than an insulator. b. none of these c. has faster moving molecules. d. has more freely moving electrons. e. has fewer freely moving electrons.
has fewer freely moving electrons
When two lamps are connected in series to a battery, the total electrical resistance that the battery senses is a. none of these b. more than the resistance of either lamp. c. less than the resistance of either lamp.
more than the resistance of either lamp
A conductor differs from an insulator in that a conductor a. none of these b. has more energy than an insulator. c. has faster moving molecules. d. has more protons than electrons. e. has more electrons than protons.
none of these
Cells are sometimes placed in series in order to a. make them last longer. b. obtain more voltage. c. neither a nor b d. both a and b
obtain more voltage
What color is a normally yellow object when illuminated with magenta light? a. yellow b. cyan c. black d. magenta e. red f. blue g. green h. white
red
What color light is absorbed by a piece of cyan glass? a. magenta b. red c. green d. blue e. cyan f. yellow
red
What color light is transmitted by a piece of red glass? a. yellow b. red c. blue d. magenta e. cyan f. green
red
Which color of light has the lowest frequency in a vacuum? a. all have the same frequency in a vacuum b. orange c. violet d. green e. red f. blue g. yellow
red
Magenta light is really a mixture of a. red and blue light. b. yellow and green light. c. red and cyan light. d. none of these e. red and yellow light.
red and blue light
The color of an opaque object is the same as the light that is a. none of these b. transmitted. c. all of these d. absorbed. e. reflected.
reflected
A positively charged rod is brought near a metal conductor. The protons in the metal conductor experience a force of a. repulsion. b. attraction. c. no force at all
repulsion
On some early automobiles both headlights went out when one bulb burned out. The headlights must have been connected in a. haste. b. series. c. perpendicular. d. parallel.
series
To determine the current flowing through a resistor, an ammeter must be connected in ___________ with the resistor. a. combination b. series c. vitro d. parallel
series
Which resistor arrangement will result in the least total current? a. parallel b. series
series
Diffraction is more pronounced through relatively a. small openings. b. large openings. c. neither d. same for each
small openings
Diffraction is more pronounced through relatively neither a. large openings. b. same for each c. small openings.
small openings
You construct a simple electrophorus out of a glass plate, an aluminum pie pan, and a styrofoam cup. When you charge the glass plate by rubbing it with silk, set the pie pan on the plate, and ground the pan with your finger, the pie pan a. gives electrons to your finger. b. none of these c. takes protons from your finger. d. takes electrons from your finger. e. gives protons to your finger.
takes electrons from your finger
During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ... a. protons were created as the result of the charging process. b. the plastic strip lost electrons to the cotton during the charging process. c. the plastic strip acquired extra protons during the charging process. d. the cotton strip lost electrons to the cotton during the charging process. e. the plastic strip acquired extra protons from the cotton.
the plastic strip lost electrons to the cotton during the charging process
Compared to the amount of electric current in the filament of a lamp, the amount of current in the connecting wire is a. definitely less. b. the same. c. often less. d. actually more. e. incredibly, all of these.
the same
When a magnet is plunged in and out of a closed coil of wire, voltage is induced in the coil. If the rate of the in-and-out motion is tripled, the induced voltage is a. doubled. b. cut in half. c. tripled. d. divided by three. e. unchanged.
tripled
When a magnet is plunged in and out of a closed coil of wire, voltage is induced in the coil. If the rate of the in-and-out motion is tripled, the induced voltage is a. tripled. b. unchanged. c. divided by three. d. doubled. e. cut in half.
tripled
DC motors are fairly simple and inexpensive to make. a. True b. False
true
The same circuit relationships that are true for resistors are true for light bulbs. a. false b. true
true
If a magnet is pushed into a coil, voltage is induced across the coil. If the same magnet is pushed into a coil at twice the speed, a. twice as much voltage is induced. b. none of these c. four times as much voltage is induced. d. the same voltage is induced. e. one half as much voltage is induced.
twice as much voltage is induced
If a magnet is pushed into a coil, voltage is induced across the coil. If the same magnet is pushed into a coil with twice the number of loops, a. twice as much voltage is induced. b. one half as much voltage is induced. c. four times as much voltage is induced. d. none of these e. the same voltage is induced.
twice as much voltage is induced
Which color of light has the greatest frequency in a vacuum? a. red b. blue c. violet d. all have the same frequency in a vacuum e. yellow f. green g. orange
violet
Which color of light has the greatest frequency in a vacuum? a. red b. yellow c. violet d. blue e. orange f. green g. all have the same frequency in a vacuum
violet
Which scientist(s) invented the Leyden jar? a. Hans Oersted b. von Kleist and Musschenbroek c. Johannes Wilcke d. Alessandro Volta e. Michael Faraday f. Thomas Edison g. Ben Franklin
von Kleist and Musschenbroek
What color is a normally red object when illuminated with cyan light? a. red b. magenta c. green d. black e. cyan f. yellow g. white h. blue
black
What color is a normally red object when illuminated with green light? a. green b. red c. cyan d. yellow e. blue f. white g. magenta h. black
black
What color is a normally red object when illuminated with green light? a. yellow b. black c. blue d. green e. magenta f. cyan g. white h. red
black
When a pair of 1-ohm resistors are connected in series, their combined resistance is a. none of these b. 2 ohms, and when in parallel, 1/2 ohm. c. 1/2 ohm, and when in parallel, 2 ohms. d. 1 ohm, and when connected in parallel, 2 ohms. e. 2 ohms, and when in parallel, 1 ohm.
2 ohms, and when in parallel, 1/2 ohm
A resistor has 12 A of current flowing through it when directly connected to a 24 V power supply. What is its resistance value? a. 36 Ohms b. 288 Ohms c. 24 Ohms d. 0.5 Ohms e. 2 Ohms f. 12 Ohms
2 Ohms
A 4-ohm resistor is connected in parallel with a 4-ohm resistor. This combination produces an equivalent resistance of a. 2 ohms. b. 4 ohms. c. 8 ohms. d. 6 ohms. e. 16 ohms.
2 ohms
How much current flows through a 24.0 Ohm resistor when connected to an 8.0 V power supply? a. 192 Amps b. 0.33 Amps c. 24 Amps d. 8 Amps e. 3.0 Amps f. 32 Amps
0.33 Amps
How much current flows through a 20.0 Ohm resistor when connected to a 10.0 V power supply? a. 0.5 Amps b. 10 Amps c. 30 Amps d. 2 Amps e. 200 Amps f. 20 Amps
0.5 Amps
A resistor has 24 A of current flowing through it when directly connected to a 12 V power supply. What is its resistance value? a. 0.5 Ohms b. 36 Ohms c. 2 Ohms d. 288 Ohms e. 24 Ohms f. 12 Ohms
0.5 Ohms
The common AA-cell is _____ volts. a. 1.5 b. 12.0 c. 6.0 d. 3.0 e. 9.0
1.5
The common AAA-cell is ______ volts. a. 9.0 b. 3.0 c. 1.5 d. 6.0 e. 12.0
1.5
The common D-cell is _____ volts. a. 6.0 b. 1.5 c. 3.0 d. 9.0 e. 12.0
1.5
To say that an electrical device has a current of 100 Amps flowing through it means that a. 100 coulombs of charge enter and leave the device every second. b. it would take 100 volts to cause 1 amp of current through the device. c. 100 joules of electric potential energy are transferred each second. d. each coulomb of charge gains 100 joules of energy.
100 coulombs of charge enter and leave the device every second
Three 300-ohm resistors in parallel give an equivalent resistance of a. more than 900 ohms. b. 900 ohms. c. less than 100 ohms. d. 100 ohms e. 300 ohms.
100 ohms
Four 300-ohm resistors in series give an equivalent resistance of... a. 600 ohms. b. 300 ohms. c. 75 ohms. d. more than 1200 ohms. e. 1200 ohms.
1200 ohms
Three 6.0 volt batteries are connected in series. The resulting voltage of this new battery arrangement is a. still 6.0 V b. 2.0 V c. 36 V d. 18 V
18 V
This 12-Volt car battery is comprised of _________. a. 8 dry cells connected in series b. 6 wet cells connected in parallel c. 12 dry cells connected in parallel d. 6 wet cells connected in series e. 1 single 12-V cell f. 8 dry cells connected in parallel g. 12 dry cells connected in series
2 wet cells connected in series
Two 400-ohm resistors in parallel give an equivalent resistance of a. more than 800 ohms. b. less than 200 ohms. c. 800 ohms. d. 400 ohms. e. 200 ohms.
200 ohms
To say that an electrical device has 300 Watts of power means that a. 300 joules of electric potential energy are transferred each second. b. 300 coulombs of charge pass enter and leave the device every second. c. each coulomb of charge gains 300 joules of electric potential energy. d. it would take 300 volts to cause 1 amp of current through the device.
300 coulombs of charge pass enter and leave the device every second
This 6-Volt lantern battery is comprised of _________. a. 4 dry cells connected in parallel b. 6 dry cells connected in parallel c. 1 single 6-V cell d. 3 wet cells connected in parallel e. 6 dry cells connected in series f. 4 dry cells connected in series g. 3 wet cells connected in series
4 dry cells connected in series
What is the electric potential difference across a 300 Ohm resistor that has 140 mA of current flowing through it? a. 42,000 Volts b. 2.14 Volts c. 467 Volts d. 0.467 Volts e. 42 Volts f. 2140 Volts
42 Volts
How many protons, neutrons, and electrons are in a single atom of Ag-108 if it has a +2 charge? a. 108 protons, 47 neutrons, 106 electrons b. 47 protons, 47 neutrons, 45 electrons c. 108 protons, 47 neutrons, 110 electrons d. 47 protons, 61 neutrons, 49 electrons e. 47 protons, 61 neutrons, 45 electrons
47 protons, 61 neutrons, 45 electrons
How many protons, neutrons, and electrons are in a single atom of Ag-108 if it has a +2 charge? a. 47 protons, 47 neutrons, 45 electrons b. 47 protons, 61 neutrons, 49 electrons c. 108 protons, 47 neutrons, 110 electrons d. 108 protons, 47 neutrons, 106 electrons e. 47 protons, 61 neutrons, 45 electrons
47 protons, 61 neutrons, 45 electrons
How many protons, neutrons, and electrons are in a single atom of Ag-108 if it has a +2 charge? a. 47 protons, 61 neutrons, 49 electrons b. 47 protons, 61 neutrons, 45 electrons c. 108 protons, 47 neutrons, 110 electrons d. 47 protons, 47 neutrons, 45 electrons e. 108 protons, 47 neutrons, 106 electrons
47 protons, 61 neutrons, 45 electrons
This 9-Volt transistor battery is comprised of _________. a. 9 dry cells connected in series b. 6 dry cells connected in series c. 4 wet cells connected in parallel d. 1 single 9-V cell e. 4 wet cells connected in series f. 6 dry cells connected in parallel g. 9 dry cells connected in parallel
6 dry cells connected in series
Three resistors, 1-ohm, 2-ohm, and 3-ohm are connected in series. Their equivalent resistance is a. 1 ohm. b. 6 ohms. c. less than 1 ohm. d. 3 ohms. e. greater than 6 ohms. f. between 1 ohm and 3 ohms.
6 ohms
Three resistors, 1-ohm, 2-ohm, and 3-ohm are connected in series. Their equivalent resistance is a. between 1 ohm and 3 ohms. b. 3 ohms. c. less than 1 ohm. d. 1 ohm. e. 6 ohms. f. greater than 6 ohms
6 ohms
A resistor has 120 mA of current flowing through it when directly connected to a 8 V power supply. What is its resistance value? a. 66.7 Ohms b. 8 Ohms c. 120 Ohms d. 960 Ohms e. 0.067 Ohms f. 0.96 Ohms
66.7 Ohms
A 4-ohm resistor is connected in series with a 4-ohm resistor. This combination produces an equivalent resistance of a. 2 ohms. b. 16 ohms. c. 6 ohms. d. 4 ohms. e. 8 ohms.
8 ohms
The SI (metric) unit of charge is the a. Amp. b. Coulomb. c. Volt. d. Watt. e. Joule.
Coulomb
Which scientist discovered that a compass needle may be is deflected by a current-bearing wire? a. Michael Faraday b. Allesandro Volta c. Hans Christian Oersted d. Ben Franklin e. Andre Marie Ampere f. Thomas Edison
Hans Christian Oersted
Which scientist/inventor is most closely associated with Volta and the development of the Voltaic pile? a. Johannes Wilcke b. Nicola Tesla c. von Kleist and Musschenbroek d. Luigi Galvani e. Ben Franklin
Luigi Galvani
Which scientist is credited for inventing the first electric motor? a. Andre Marie Ampere b. Allesandro Volta c. Hans Christian Oersted d. Thomas Edison e. Michael Faraday f. Ben Franklin
Michael Faraday
What is the difference between the nucleus of a Rh-103 atom and the nucleus of a Pd-106 atom? a. Pd-106 has 3 more protons and 1 more neutron. b. Pd-106 has 1 fewer proton. c. Pd-106 has 1 more proton. d. Pd 106 has 1 more proton and 2 more neutrons. e. Pd-106 has 3 more protons. f. Pd-106 has 1 more proton and 3 more neutrons.
Pd-106 has 1 more proton and 2 more neutrons
Which relationship is true for potential difference when resistors are connected in series? a. 1/VT = 1/V1 + 1/V2 + 1/V3 + ... b. VT = V1 = V2 = V3 = ... c. VT = V1 + V2 + V3 + ... d. VT = V1 * V2 * V3 * ...
VT=V1 + V2 +V3 + ....
Several light bulbs are connected in a circuit. When the switch is closed, a. all bulbs light at once. b. the bulbs light one at a time.
all bulbs light at once
Interference is a property of a. all of these b. water waves. c. sound waves. d. none of these e. light waves.
all of these
Break a magnet in two and you a. always end up with two pieces, one piece is a north pole and the other piece is a south pole, no matter how big the original magnet was. b. end up with two pieces, one piece is a north pole and the other piece is a south pole, if the magnet was small enough. c. always produce two magnets, each with north and south poles, no matter what the size of the original magnet. d. produce two magnets, each with north and south poles, only if the original magnet was large enough.
always produce two magnets, each with north and south poles, no matter what the size of the original magnet
The SI unit of current is the ________. a. Coulomb b. Amp c. Watt d. Volt e. Ohm
amp
The spectrum seen above was most likely produced by... a. a fluorescent bulb. b. an iridescent bulb. c. an infrared lamp. d. an incandescent bulb.
an incandescent bulb
When comparing the voltages produced by fruit and vegetable electrochemical cells, the types of metals used ________________ the type of fruit or vegetable used. a. are definitely less important than b. are slightly more important than c. are of equal importance to d. are definitely more important than d. are slightly less important than
are definitely more important than
If two objects electrically attract each other, then we can say for certain that a. at least one object must be charged. b. both objects must be charged. c. one of the objects must be positive. d. one of the objects must be negative.
at least one object must be charged
Like kinds of magnetic poles repel while unlike kinds of magnetic poles a. repel also. b. attract. c. may attract or repel.
attract
A negatively charged rod is brought near a metal conductor. The protons in the metal conductor experience a force of a. attraction. b. no force at all c. repulsion.
attraction
According to Huygens' principle, every point on a wave a. none of these b. all of these c. is a diffraction source. d. behaves as a source of new waves. e. is the superposition of every other part of the wave.
behaves as a source of new waves
An opaque object is blue when illuminated with white light. What color is it when viewed through a red transparency? a. green b. cyan c. blue d. black e. red f. magenta g. yellow
black
An opaque object is red when illuminated with white light. What color is it when viewed through a cyan transparency? a. blue b. red c. yellow d. cyan e. magenta f. green g. black
black
An opaque object is red when illuminated with white light. What color is it when viewed through a cyan transparency? a. red b. cyan c. black d. blue e. magenta f. yellow g. green
black
An opaque object is red when illuminated with white light. What color is it when viewed through a green transparency? a. magenta b. black c. blue d. yellow e. cyan f. red g. green
black
What color is a normally blue object when illuminated with yellow light? a. cyan b. yellow c. green d. magenta e. red f. white g. black h. blue
black
A single light bulb is connected to a battery. Which of the following would cause the bulb to shine brighter? a. increase the current through the bulb b. both B and D c. both A and C d. decrease the current through the bulb e. increase the voltage of the battery f. decrease the voltage of the battery
both A and C
Upon entering the room, you observe two balloons suspended from the ceiling. You notice that instead of hanging straight down vertically, the balloons seems to be repelling each other. You can conclusively say ... a. both balloons have a positive charge. b. both balloons are charged with the same type of charge. c. one balloon is charge positively and the other negatively. d. both balloons have a negative charge.
both balloons are charged with the same type of charge
Which of the diagrams above best represents the charge distribution on a neutral metal sphere when a negatively charged balloon is held nearby? a. a b. d c. c d. b
c
Kirchhoff's Junction Law/Rule is essentially a conservation of _____________ statement. a. power b. resistance c. charge d. energy
charge
Which of the following would be a proper way to stack a Voltaic pile using copper and zinc as the conducting metals and cardboard soaked in salt water as the electrolyte? a. copper - cardboard - zinc - cardboard - zinc - cardboard - copper - cardboard - copper - cardboard - zinc b. copper - cardboard - zinc - cardboard - copper - cardboard - zinc c. copper - cardboard - zinc - copper - cardboard - zinc - copper - cardboard - zinc d. cardboard - copper - zinc - cardboard - copper - zinc - cardboard - copper - zinc e. copper - cardboard - zinc - zinc - cardboard - copper - copper - cardboard - zinc
copper - cardboard - zinc - copper - cardboard - zinc - copper - cardboard - zinc
Which of these combinations of metals will produce the greatest electric potential difference in a fruit or vegetable cell? a. copper and steel b. copper and aluminum c. copper and zinc d. steel and zinc e. any two metals as long as the same fruit or vegetable is used. f. aluminum and steel g. aluminum and zinc
copper and zinc
The complementary color of red is a. cyan. b. magenta. c. blue. d. yellow. e. green.
cyan
What color light is absorbed by a piece of red glass? a. red b. blue c. magenta d. yellow e. green f. cyan
cyan
A circuit is made containing a battery and a single resistor. Decreasing the battery's electric potential difference will cause the total current in the circuit to a. decrease. b. remain the same. c. increase.
decrease
As more lamps are put into a series circuit, the overall current from the power source a. decreases. b. stays the same. c. increases.
decreases
When considering double slit interference, the pattern spreads out as the distance between slits __________ . a. remains constant b. increases c. decreases d. none of these
decreases
As the number of resistors in a series circuit decreases, the overall resistance __________ and the current in the circuit __________. a. decreases, decreases b. increases, stays the same c. increases, decreases d. stays the same, decreases e. stays the same, stays the same f. decreases, increases g. stays the same, increases h. decreases, stays the same i. increases, increases
decreases, increases
When considering double slit interference, the distance between bright spots is _____________________ the wavelength of light. a. directly proportional to b. unrelated to c. inversely proportional to d. equal to
directly proportional to
When considering double slit interference, the distance between bright spots is _____________________ the wavelength of light. a. equal to b. unrelated to c. directly proportional to d. inversely proportional to
directly proportional to
To say that an electrical battery has an electric potential difference of 100 Volts means that a. it would take 100 volts to cause 1 amp of current through the circuit. b. 100 coulombs of charge enter and leave the battery every second. c. each coulomb of charge gains 100 joules of electric potential energy. d. 100 joules of energy are transferred each second.
each coulomb of charge gains 100 joules of electric potential energy
To say that an electrical battery has an electric potential difference of 300 Volts means that a. 300 joules of electric potential energy are transferred each second. b. 300 coulombs of charge pass enter and leave the battery evey second. c. each coulomb of charge gains 300 joules of electric potential energy. d. it would take 300 volts to cause 1 amp of current through the circuit.
each coulomb of charge gains 300 joules of electric potential energy
A balloon will stick to a wooden wall if the balloon is charged a. negatively. b. positively. c. None of the above choices are correct. d. either positively or negatively.
either positively or negatively
The brightness of a bulb depends on how much ____________________ is converted into light energy each second. a. current b. charge c. voltage d. brightness e. electrical energy
electrical energy
As a negatively charged rod moves toward the knob of a neutral electroscope, ... a. electrons in the knob move from the knob toward the leaves AND protons in the leaves move from the leaves toward the knob. b. electrons in the leaves move from the leaves toward the knob AND protons in the knob move from the knob toward the leaves. c. electrons in the knob move from the knob toward the leaves. d. electrons in the leaves move from the leaves toward the knob. e. protons in the leaves move from the leaves toward the knob. f. protons in the knob move from the knob toward the leaves.
electrons in the knob from the knob toward the leaves
You charge an electroscope by touching it with a negatively charged rod. What happens if you then touch the knob of the electroscope with your finger? a. Electrons move from your finger into the electroscope. b. Protons move from your finger into the electroscope. c. Electrons move from the electroscope into your finger AND protons move from your finger into the electroscope. d. Electrons move from your finger into the electroscope AND protons move from the electroscope into your finger. e. Electrons move from the electroscope into your finger. f. Protons move from the electroscope into your finger.
electrons move from the electroscope into your finger
You charge an electroscope by touching it with a positively charged rod. What happens if you then touch the knob of the electroscope with your finger? a. Protons move from the electroscope into your finger. b. Electrons move from the electroscope into your finger. c. Protons move from your finger into the electroscope. d. Electrons move from your finger into the electroscope. e. Electrons move from your finger into the electroscope AND protons move from the electroscope into your finger. f. Electrons move from the electroscope into your finger AND protons move from your finger into the electroscope.
electrons move from your finger into the electroscope
A negative ion has more a. neutrons than protons. b. protons than neutrons. c. electrons than neutrons. d. electrons than protons. e. protons than electrons.
electrons than protons
While holding the outer metal of a Leyden jar with your hand, you touch the inner metal with a negatively charged rod. This action causes... a. electrons to move into the inner metal AND electrons to move out of the outer metal. b. electrons to move into the inner metal AND protons to move into the outer metal. c. protons to move out of inner metal. d. electrons to move into the inner metal. e. protons to move out of the inner metal AND electrons to move into the outer metal. f. electrons to move out of the outer metal. g. protons to move into the outer metal. h. protons to move into the inner metal AND electrons to move into the outer metal.
electrons to move into the inner metal AND electrons to move out of the outer metal
While holding the outer metal of a Leyden jar with your hand, you touch the inner metal with a negatively charged rod. This action causes... a. protons to move out of the inner metal AND electrons to move into the outer metal. b. protons to move out of inner metal. c. electrons to move into the inner metal AND electrons to move out of the outer metal. d. protons to move into the outer metal. e. electrons to move out of the outer metal. f. electrons to move into the inner metal AND protons to move into the outer metal. g. protons to move into the inner metal AND electrons to move into the outer metal. h. electrons to move into the inner metal.
electrons to move into the inner metal and electrons to move out of the outer metal
While holding the outer metal of a Leyden jar with your hand, you touch the inner metal with a positively charged rod. This action causes... a. electrons to move out of the outer metal. b. electrons to move out of the inner metal AND electrons to move into the outer metal. c. protons to move out of inner metal. d. electrons to move into the inner metal AND protons to move into the outer metal. d. electrons to move into the inner metal. e. protons to move into the inner metal AND electrons to move into the outer metal. f. electrons to move into the inner metal AND electrons to move out of the outer metal. g. protons to move into the outer metal.
electrons to move out of the inner metal and electrons to move into the outer metal
An electroscope is charged positively having foil leaves that stand apart. As a negative charge is brought close to the electroscope, the leaves a. spread apart further. b. do not move. c. fall closer together.
fall closer together
Different colors of light correspond to different light a. polarities. b. amplitudes. c. frequencies. d. velocities. e. intensities.
frequencies
Different colors of light correspond to different light a. polarities. b. frequencies. c. intensities. d. velocities. e. amplitude
frequencies
If 5 identical bulbs are connected in series and one bulb goes out, the other bulbs a. remain unchanged. b. may or may not go out - depending on where they are. c. go out completely. d. get brighter. e. get dimmer, but do not go out completely.
go out completely
If sunlight were green instead of white, the most comfortable color to wear on a hot day would be a. violet. b. yellow. c. blue. d. magenta. e. green.
green
What color is a normally yellow object when illuminated with cyan light? a. red b. black c. cyan d. white e. magenta f. green g. yellow h. blue
green
When otherwise identical light bulbs are connected in a combination circuit, the brightest bulb will be the bulb a. closest to the positive terminal of the battery. b. having the least current flowing through it. c. having the most current flowing through it. d. closest to the negative terminal of the battery.
having the most current flowing through it
A circuit is made containing a battery and a single resistor. Increasing the battery's electric potential difference will cause the total current in the circuit to a. decrease. b. increase. c. remain the same.
increase
As more and more cells are added in series to a circuit containing a single light bulbs, the brightness of the bulb a. does not change. b. increases. c. decreases.
increases
When considering double slit interference, the pattern spreads out as the distance to the screen __________ . a. remains constant b. increases c. decreases d. none of these
increases
As the number of resistors in a series circuit increases, the overall resistance __________ and the current in the circuit __________. a. stays the same, decreases b. decreases, increases c. increases, increases d. increases, decreases e. increases, stays the same f. decreases, decreases g. decreases, stays the same h. stays the same, increases i. stays the same, stays the same
increases, decreases
To say that an electrical device has a resistance of 100-ohms means that a. 100 coulombs of charge enter and leave the device every second. b. each coulomb of charge gains 100 joules of electric potential energy. c. it would take 100 volts to cause 1 amp of current through the device. d. 100 joules of electric potential energy are transferred each second.
it would take 100 volts to cause 1 amp of current through the device
To say that an electrical device has a resistance of 200-ohms means that a. 200 coulombs of charge enter and leave the device every second. b. 200 joules of electric potential energy are transferred each second. c. it would take 200 volts to cause 1 amp of current through the device. d. each coulomb of charge gains 200 joules of electric potential energy.
it would take 200 volts to cause 2 amp of current through the device
To say that an electrical device has a resistance of 300-ohms means that a. it would take 300 volts to cause 1 amp of current through the device. b. 300 coulombs of charge enter and leave the device every second. c. each coulomb of charge gains 300 joules of electric potential energy. d. 300 joules of electric potential energy are transferred each second.
it would take 300 volts to cause 1 amp of current through the device
Compared to the total current in a circuit when a single lamp is connected to a battery, the total current in a circuit when two identical lamps are connected in series to the same battery will be a. less current. b. more current. c. the same current.
less current
Compared to the resistance of two resistors connected in series, the same two resistors connected in parallel have a. less resistance. b. more resistance. c. the same resistance.
less resistance
When two resistors are connected in parallel to a battery, the electrical resistance that the battery senses is a. more than the resistance of either resistor. b. less than the resistance of either resistor. c. none of these
less than the resistance of either resistor
Charge carriers in a metal are electrons rather than protons because electrons are a. all of these. b. negative. c. none of these. d. smaller. e. loosely bound.
loosely bound
Charge carriers in a metal are electrons rather than protons because electrons are a. none of these. b. all of these. c. loosely bound. d. smaller. e. negative.
loosely bound
What color light is transmitted by a piece of magenta glass? a. magenta b. green c. yellow d. red e. cyan f. blue
magenta
When the lights depicted above shine on the screen, the paper appears... (red and blue) a. white. b. red. c. cyan. d. blue. e. magenta. f. black. g. yellow. h. green.
magenta
Cells are sometimes placed in parallel in order to a. make them last longer. b. neither a nor b c. both a and b d. obtain more voltage.
make them last longer
When two resistors are connected in series to a battery, the electrical resistance that the battery senses is a. more than the resistance of either resistor. b. less than the resistance of either resistor. c. none of these
more than the resistance of either resistor
Connect a pair of lamps in series and you draw a certain total current from the connected battery. Connect the same lamps in parallel and you draw a. the same total current. b. less total current. c. sometimes more, sometimes less total current. d. more total current.
more total current
The source of all magnetism is a. tiny pieces of iron. b. tiny domains of aligned atoms. c. moving electric charge. d. ferromagnetic materials. e. none of these
moving electric charge
When mylar and paper come into contact, which material takes electrons from the other? a. mylar b. paper c. impossible to tell without more information d. neither
mylar
If the north pole of a magnet is thrust into a closed loop of wire and produces a positive current, then when it is pulled back out of the loop the current will be a. also positive. b. no current produced when it leaves the loop. c. negative.
negative
Rub your hair with a comb and the comb becomes a. negatively charged. b. positively charge. c. discharged.
negatively
Holding the knob of a Leyden jar and touching the outer metal with a negatively charged rubber rod will make the outside of the Leyden jar a. none of these b. negatively charged. c. positively charged. d. neutral.
negatively charged
Holding the knob of a Leyden jar and touching the outer metal with a positively charged glass rod will make the inside of the Leyden jar a. positively charged. b. none of these c. negatively charged. d. neutral.
negatively charged
Rub a plastic straw on your cotton shirt and the straw becomes a. negatively charged. b. positively charged. c. neither
negatively charged
Rub your hair with a comb and the comb becomes a. discharged. b. positively charge. c. negatively charged.
negatively charged
When mylar and paper come into contact, which material gives protons to the other? a. neither b. paper c. impossible to tell without more information d. mylar
neither
When nylon and amber come into contact, which material takes protons from the other? a. impossible to tell without more information b. neither c. nylon d. amber
neither
You construct a simple electrophorus out of a glass plate, an aluminum pie pan, and a styrofoam cup. You charge the glass plate by rubbing it with silk, set the pie pan on the plate, ground the pan with your finger, and then lift the pan off the glass plate. You then touch the pan with your finger and the pan becomes a. neutral. b. positively charged. c. negatively charged. d. none of these
neutral
A positively charged rod is brought near a metal conductor. The neutrons in the metal conductor experience a force of a. attraction. b. no force at all c. repulsion.
no force at all
If a magnet is pushed into a coil, voltage is induced across the coil. If the same magnet is pushed into a coil at half the speed, a. twice as much voltage is induced. b. one half as much voltage is induced. c. none of these d. the same voltage is induced. e. four times as much voltage is induced.
one half as much voltage is induced
A positively charged piece of Styrofoam is placed on the table. A neutral aluminum pie plate is brought near as shown above. While held above the Styrofoam, the aluminum plate is touched (grounded). At this point, there is a movement of electrons. Electrons move ____ . a. out of the aluminum plate into the Styrofoam b. into the aluminum plate from the Styrofoam c. into the aluminum plate from the ground (hand) d. out of the aluminum plate into the ground (hand) e. from the ground through the aluminum plate to the Styrofoam f. from the Styrofoam through the aluminum plate to the ground g. .... nonsense! Electrons do not move at all.
out of the aluminum plate into ground (hand)
When mylar and paper come into contact, which material gives electrons to the other? a. neither b. mylar c. paper d. impossible to tell without more information
paper
When mylar and paper come into contact, which material gives electrons to the other? a. paper b. impossible to tell without more information c. mylar d. neither
paper
When two cells are connected in series, they are connected a. positive to negative. b. positive to positive. c. negative to negative. d. both a and b
positive to negative
Holding the knob of a Leyden jar and touching the outer metal with a negatively charged rubber rod will make the inside of the Leyden jar a. none of these b. negatively charged. c. neutral. d. positively charged.
positively charged
Holding the knob of a Leyden jar and touching the outer metal with a positively charged glass rod will make the outside of the Leyden jar a. negatively charged. b. positively charged. c. neutral. d. none of these
positively charged
Holding the knob of a Leyden jar and touching the outer metal with a positively charged glass rod will make the outside of the Leyden jar a. neutral. b. none of these c. positively charged. d. negatively charged.
positively charged
Rub a balloon with fur and the fur becomes a. discharged. b. negatively charged. c. positively charge.
positively charged
Touching the knob of a Leyden jar with a negatively charged rubber rod will make the outside of the Leyden jar a. positively charged. b. neutral. c. negatively charged. d. none of these
positively charged
Touching the knob of a Leyden jar with a positively charged glass rod will make the inside of the Leyden jar a. neutral. b. none of these c. positively charged. d. negatively charged.
positively charged
Touching the knob of a Leyden jar with a positively charged glass rod will make the inside of the Leyden jar a. positively charged. b. negatively charged. c. neutral. d. none of these
positively charged
A positive ion has more a. electrons than protons. b. protons than electrons. c. protons than neutrons. d. neutrons than protons. e. electrons than neutrons.
protons than electrons
An opaque object is magenta when illuminated with white light. What color is it when viewed through a yellow transparency? a. cyan b. magenta c. yellow d. black e. green f. blue g. red
red
An opaque object is magenta when illuminated with white light. What color is it when viewed through a yellow transparency? a. yellow b. green c. black d. magenta e. cyan f. red g. blue
red
An opaque object is yellow when illuminated with white light. What color is it when viewed through a red transparency? a. blue b. red c. cyan d. black e. green f. magenta g. yellow
red
What color is a normally magenta object when illuminated with yellow light? a. white b. cyan c. yellow d. blue e. black f. magenta g. red h. green
red
What color is a normally red object when illuminated with yellow light? a. magenta b. red c. white d. blue e. green f. black g. yellow h. cyan
red
When a switch is closed and a battery causes a light bulb to glow, the electrons in the circuit that caused the bulb to light a. came directly from behind the switch. b. none of these c. were already present in the bulb. d. were created by the chemical reaction in the battery.
were already present in the bulb
What color light is transmitted by a piece of yellow glass? a. yellow b. blue c. red d. green e. magenta f. cyan
yellow
When the lights depicted above shine on the screen, the paper appears...(red and green) a. yellow. b. white. c. red. d. magenta. e. cyan. f. green. g. black. h. blue.
yellow
A blue object will appear black when illuminated with a. blue light. b. none of these c. yellow light. d. magenta light. e. cyan light.
yellow light
