Download 1. Which one of the following circuits has the largest resistance? 2. A

1. Which one of the following circuits has the largest resistance?
2. A 10-A current is maintained in a simple circuit with a total resistance of 200 O. What
net charge passes through any point in the circuit during a 1- minute interval?
A) 200 C
B) 400 C
C) 500 C
D) 600 C
E) 1200 C
3. A 40-W and a 60-W light bulb are designed for use with the same voltage. What is the
ratio of the resistance of the 60-W bulb to the resistance of the 40-W bulb?
A) 1.5
B) 0.67
C) 2.3
D) 0.44
E) 3.0
4. A computer monitor uses 2.0 A of current when it is plugged into a 120 V outlet. The
monitor is never turned off. What is the yearly cost of operating the monitor if the cost
of electricity is $0.12/kWh?
A) $14
B) $21
C) $98
D) $170
E) $250
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5. A 4.5-V battery is connected to two resistors connected in series as shown in the
drawing. Determine the total power dissipated in the resistors.
A)
B)
C)
D)
E)
0.033 W
0.090 W
0.15 W
0.60 W
4.7 W
Use the following to answer questions 6-7:
Three resistors are connected as shown in the figure. The potential difference between
points A and B is 26 V.
6.
A)
B)
C)
D)
E)
What is the equivalent resistance between the points A and B?
3.8 O
4.3 O
5.1 O
6.8 O
9.0 O
7.
A)
B)
C)
D)
E)
How much current flows through the 2-O resistor?
2.0 A
4.0 A
6.0 A
8.7 A
10.0 A
Use the following to answer question 8:
Four resistors and a 6-V battery are arranged as shown in the circuit diagram.
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8.
A)
B)
C)
D)
E)
Determine the equivalent resistance for this circuit.
50 O
120 O
29 O
5O
12 O
Use the following to answer question 9:
Five resistors are connected as shown in the diagram. The potential difference between
points A and B is 25 V.
9.
A)
B)
C)
D)
E)
How much energy is dissipated in the 1.8-O resistor in 4.0 seconds?
18 J
28 J
55 J
64 J
93 J
10. A physics student performed an experiment in which the potential difference V between
the ends of a long straight wire was varied. The current I in the wire was measured at
each value of the potential difference with an ammeter and the results of the experiment
are shown in the table.
A)
B)
C)
D)
E)
Which one of the following statements is the best conclusion based on the data?
The resistance of the wire is 20 O.
The wire does not obey Ohm's law.
The current in the wire is directly proportional to the applied potential difference.
The wire obeys Ohm's law over the range of potential differences between 5 and 30 V.
The wire obeys Ohm's law over the range of potential differences between 5 and 20 V.
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Answer Key
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
E
D
B
E
C
B
B
E
C
E
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