Download Electric Circuits Student AP Physics 1 Date

Electric Circuits
AP Physics 1
Student
Date
Base your answers to questions 1 and 2 on the circuit 5. Base your answer to the following question on the
diagram below which shows a battery with an
circuit diagram shown below.
internal resistance of 6.0 connected to a 12- and
18-ohm resistor in series. The current in the 12resistor is 0.2 A.
1. What is the potential between the two terminals of the
battery?
A) 1.2 V
C) 6.0 V
E) 10.8 V
B) 2.4 V
D) 7.2 V
A) 1.5
C) 8
E) 19
2. What is the emf of the battery?
A) 1.2 V
C) 6.0 V
E) 10.8 V
B) 6
D) 14.4
6. In order to measure the power dissipated in a resistor
of unknown value, the minimum equipment needed
would be
B) 2.4 V
D) 7.2 V
3. A circuit element that must be put in series and has a
relatively low resistance is most likely
A)
B)
C)
D)
E)
What is the total resistance of the circuit?
an ammeter
a voltmeter
an ohmmeter
either an ohmmeter or a voltmeter
either a voltmeter or an ammeter
A)
B)
C)
D)
a voltmeter only
an ammeter only
a voltmeter and an ammeter
an ammeter, a voltmeter, and a resistor of known
value
E) a voltmeter and a magnet producing a known
magnetic field
7. Base your answer to the following question on the part
of the circuit shown below.
If the potential difference between A and B is 4 V,
how much charge will pass though the 4  resistor in
5 seconds?
4. If all the above resistors have a resistance of R,
determine the total equivalent resistance between
points A and B.
A) R
B)
R
C) R
D) R
A) 1 C
B) 2 C
C) 4 C
D) 5 C
E) 8 C
E) R
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Electric Circuits
11. A lamp, a voltmeter V, a ammeter A, and a battery
with zero internal resistance are connected as shown
above. Adding a second, identical lamp at point X
would
8. In the diagram above, all the resistors have an
identical resistance R. If the switch S is closed, the
current through the resistor R1 will
A)
B)
C)
D)
E)
increase and the voltage will remain the same
decrease and the voltage will remain the same
remain the same with constant voltage
remain the same but the voltage will increase
remain the same but the voltage will decrease
9. Base your answer to the following question on the
circuit diagram below.
A)
B)
C)
D)
E)
increase the ammeter reading
decrease the ammeter reading
increase the voltmeter reading
decrease the voltmeter reading
produce no change in either reading
12. Which quantities are needed to calculate the amount
of energy supplied to an operating toaster?
I. resistance
II. applied voltage
III. operating time
A) II only
C) I and III only
E) I, II, and III
B) I and II only
D) II and III only
13. A resistor dissipates a power P when a current I
passes through it. If the current is doubled, the
power dissipated would be
What is the power dissipated by the 4
A) 64 W
C) 96 W
E) 144 W
resistor?
B) 72 W
D) 120 W
10. Base your answer to the following question on the
diagram below which shows two resistors connected
in series. A voltage V is applied to the pair.
A) P
B) P
C) P
D) 2P
E) 4P
14. A falling 2 kg mass, is kept at a constant velocity
and used to power a light bulb. If the light bulb
requires a current of 0.5 A to run and has an internal
resistance of 60 . How fast must the mass fall to
power the bulb?
A) 0.75 m/s
C) 2 m/s
E) 6 m/s
B) 1.5 m/s
D) 3 m/s
What is the ratio of the voltage drop over R 1 to the
voltage drop over R 2 when R 1 = 1.5R 2?
A)
B)
C) 1
D)
E)
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Electric Circuits
#1
Lightbulbs of fixed resistance 4.0  and 8.0 , a 12.0 V battery, and a switch S are
connected as shown in the schematic diagram above. The switch S is closed.
a. Calculate the current in bulb A.
b. Which lightbulb is brightest? Justify your answer.
c. Switch S is then opened. By checking the appropriate spaces below, indicate
whether the brightness of each lightbulb increases, decreases, or remains the same.
Explain your reasoning for each lightbulb.
i. Bulb A: The brightness
Explanation:
increases
decreases
remains the same
ii. Bulb B: The brightness
Explanation:
increases
decreases
remains the same
iii. Bulb C: The brightness
Explanation:
increases
decreases
remains the same
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