Unit 5 & 6 Quiz

If the wiper is moved to the bottom of the resistor, the voltmeter will indicate a value of how many volts? A. 0 B. 6 C. 10 D. 12

A. 0

A series circuit has a total resistance of 240 Ω and a current flow of 4 A. What is the applied voltage? A. 960 V B. 244 V C. 0.0167 V D. 60 V

A. 960 V

In an automobile, the positive terminal of the battery is grounded to the frame, or chassis, of the vehicle. A. False B. True

A. False

Which of the following is one function of a resistor in a circuit? A. to limit the flow of current B. to produce a wattage divider C. to increase the flow of current D. to produce a resistor divider

A. To limit the flow of current

By connecting resistors of the proper value, almost any voltage desired can be obtained. A. True B. False

A. True

The value of a resistor can often be determined by the "color code." A. True B. False

A. True

What type of fixed resistor is made by applying a film of carbon to a ceramic rod? A. carbon film B. metal film C. wire-wound D. metal glaze

A. carbon film

A point that is used as a common connection for other parts of a circuit not actually driven into the ground is called a _____ ground. A. chassis B. circuit C. supply D. ground

A. chassis

What type of fixed resistor is made from a compound of carbon graphite and resin bonding material? A. composition carbon B. wire-wound C. metal film D. metal glaze

A. composition carbon

What type of fixed resistor is made by combining metal with glass and then applying it to a ceramic base as a thick film? A. metal glaze B. metal film C. wire-wound D. carbon film

A. metal glaze

By observing the direction of current flow through the circuit, voltage _____ can be determined. A. polarity B. drop

A. polarity

It is often necessary to know the ________ of the voltage dropped across a resistor? A. polarity B. resistance C. current D. voltage

A. polarity

A three-resistor circuit has a total power of 25 W. Two of the resistors dissipate 10 W and 5 W, respectively. How much power does the third resistor dissipate? A 15 W B. 10 W C. 2 W D. 25 W

B. 10 W

What is the applied voltage in a series circuit with two resistors of 25 V and 60 V, respectively? A. 35 V B. 85 V C. 25 V D. 60 V

B. 85 V

A below-ground voltage is positive with respect to ground. A. True B. False

B. False

There are many more resistance values available for 10% tolerance resistors than for 1% tolerance resistors. A. True B. False

B. False

The current, voltage, power, and resistance in a series circuit can be calculated using _____ law. A. Volt's B. Ohm's C. Coulomb's D. Ampere's

B. Ohm's

How many color bands are used on resistors that have a tolerance of ±20%? A. four B. Three C. Six D. Five

B. Three

Because a circuit breaker is connected in a series with the rest of the circuit, all the circuit current must flow through them. A .False B. True

B. True

One of the rules for Ohm's law when finding values of voltage, current, resistance, and power in a series circuit is that the current is the same at any point in the circuit. A. False B. True

B. True

Resistors have a power rating in watts that should not be exceeded, or the resistor will be damaged. A. False B. True

B. True

Variable resistors can be obtained in different case styles and power ratings. A. False B. True

B. True

A voltage _____ is used to provide different voltages between certain points in a circuit. A. scalar B. divider C. multiplier D. doubler

B. divider

In a series circuit, the sum of the voltage drops is _____ the applied voltage. A. unrelated to B. equal to C. less than D. greater than

B. equal to

What is another term for a variable resistor? A. wire wound resistor B. potentiometer C. metal film resistor D. multiturn resistor

B. potentiometer

When a resistive wire has a total value of ______ ohms, the resistor can be set between the values of 0 and 100 ohms. A. 1000 B. 10 C. 100 D. 0

C. 100

A circuit with resistive elements of 220, 100, 57, and 43 produce what total resistance? A. 0.2857 B. 42 C. 420 D. 3.5

C. 420

Which of the following formulas is the general voltage divider formula? A. It = (Et/Rt) B. Ex= It x Rt C. Ex = (Rx/Rt) Et D. Ex= (Et/Rt) Rx

C. Ex = (Rx/Rt) Et

In a series circuit, each resistor ______________ the flow of current in the circuit. A. stabilizes B. Increases C. impedes D. neutralizes

C. impedes

What generally ranges from 3 turns to 10 turns? A. variable resistor B. potentiometer C. multiturn variable resistor D. rheostat

C. multiturn variable resistor

What is used to describe how a variable resistor is used rather than some specific type of resistor? A. rheostat B. multiturn variable resistor C. potentiometer D. variable resistor

C. potentiometer

What force pushes the electrons through a resistance in a circuit? A. Inductance B. current C. voltage D. potential

C. voltage

How many amperes is present in a 20-volt battery with a 30-ohm resistor? A. 0.15 B. 0.5 C. 1.5 D. 0.67

D. 0.67

In an electronic burglar alarm, when the circuit is connected, all the _________ points will be connected together. A. negative B. wired C. positive D. ground

D. ground

In voltage divider circuits, what is often used to provide a common reference point to produce voltages? A. chassis B. voltmeter C. voltage drop D. ground

D. ground

In a one- terminal zero-center voltmeter connected to ground and the probe connected to a Point A, the pointer of the voltmeter gives a ________ indication for voltage. A. positive B. neutralizing C. stabilizing D. negative

D. negative

Resistors functioning as _____ are used in applications involving field-effect transistors (FETs) and multirange voltmeter circuits. A. voltage multipliers B. current multipliers C. current dividers D. voltage dividers

D. voltage dividers

What type of resistors are generally used when a high power rating is needed? A. metal glaze B. metal film C. carbon film D. wire-wound

D. wire-wound