Physics QS 7 (Test 2)
Suppose the battery EMF is 24 V in the circuit pictured above. Which of the following relationships is true, no matter what the resistance of the bulbs are?
VB + VC = VD
When the switch between the battery and bulb A is closed,
all bulbs will light at the same time.
When the switch between bulbs A and B is opened,
all four bulbs go out at the same time
When the switch between bulbs C and D is opened,
all four bulbs go out at the same time
A single light bulb is connected to a battery. Which of the following would cause the bulb to shine brighter?
both A and C (increase the voltage of the battery & increase the current through the bulb)
Kirchhoff's Junction Law/Rule is essentially a conservation of _____________ statement.
charge
As more lamps are put into a series circuit, the overall current from the power source
decreases
The diagram above depicts a couple of circuits containing a voltage source (battery pack), a resistor (light bulb) and an ammeter (for measuring current). In which circuit does the light bulb have the greatest resistance?
diagram A
As more and more cells are added in parallel to a circuit containing a single light bulbs, the brightness of the bulb
does not change
The brightness of a bulb depends on how much ____________________ is converted into light energy each second.
electrical energy
Kirchhoff's Loop Law/Rule is essentially a conservation of _____________ statement.
energy
What happens to bulb D if bulb B goes out?
gets brighter
What happens to bulb D if bulb C goes out?
gets brighter
What happens to bulb A if bulb C goes out?
gets dimmer
If 5 identical bulbs are connected in series and one bulb goes out, the other bulbs
go out completely
What happens to bulb C if bulb A goes out?
goes out completely
What happens to bulb C if bulb B goes out?
goes out completely
What happens to bulb D if bulb A goes out?
goes out completely
When otherwise identical light bulbs are connected in a combination circuit, the brightest bulb will be the bulb
having the most current flowing through it.
Which of the following relationships is true?
i2 + i3 = i4
Suppose the battery EMF is 24 V in the circuit pictured above. Which of the following relationships is true, no matter what the resistance of the bulbs are?
iA + iB = iC + iE
Suppose the battery EMF is 24 V in the circuit pictured above. Which of the following relationships is true, no matter what the resistance of the bulbs are?
iE = iD + iC
As more and more cells are added in series to a circuit containing a single light bulbs, the brightness of the bulb
increases
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
less current
When two lamps are connected in parallel to a battery, the total electrical resistance that the battery senses is
less than the resistance of either lamp.
When two lamps are connected in series to a battery, the total electrical resistance that the battery senses is
more than the resistance of either lamp
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
more total current
When the switch between bulbs B and C is closed,
no bulbs will light
As more lamps are put into a series circuit, the overall potential difference from the power source
stays the same
Compared to the amount of electric current in the filament of a lamp, the amount of current in the connecting wire is
the same
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
were already present in the bulb
The correct brightness order of these identical bulbs is
A = D > B = C = E = F
The correct brightness order of these identical bulbs is
A = E > D > B = C
The correct brightness order of these identical bulbs is
A > B = C
The correct brightness order of these identical bulbs is
A > D > B = C
Three identical light bulbs are connected to a D-cell as shown shown above. Which one of the following statements is true?
All three bulbs will have the same brightness.
The correct brightness order of these identical bulbs is
D > E = F > A = B = C
The correct brightness order of these identical bulbs is
C > D = E > A = B
The correct brightness order of these identical bulbs is
F > E > A = B > C = D