| 81. |
A 5.00 amp current passes through a 2.50 ohm resistor. What is
the voltage drop across the resistor? Answer
|
|
A. |
0.500 volts |
C. |
7.50 volts |
|
B. |
2.00 volts |
D. |
12.5 volts |
|
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|
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|
| 82. |
A 100. watt motor
uses how much electrical energy when connected to a 240. volt outlet for
30.0 minutes? Answer
|
|
A. |
180. kJ |
C. |
800. kJ |
|
B. |
750. kJ |
D. |
4320 kJ |
|
|
|
|
|
| 83. |
If three resistors
of unequal resistance are connected in series, what will be true about the
voltage drop across each resistor and current passing through each
resistor? Answer
|
|
A. |
equal voltage drop and current |
C. |
unequal voltage drop and equal
current |
|
B. |
equal voltage drop and unequal
current |
D. |
unequal voltage drop and current |
|
|
|
|
|
| 84. |
If three resistors
of unequal resistance are connected in parallel, what will be true and the
voltage drop across each resistor and current passing through each
resistor? Answer
|
|
A. |
equal voltage drop and current |
C. |
unequal voltage drop and equal
current |
|
B. |
equal voltage drop and unequal
current |
D. |
unequal voltage drop and current |
|
|
|
|
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| 85. |
The circuit to the right has a 10.0
volt battery.
R1 is 2.50 ohms
R2 is 5.00 ohms
The ammeter between the battery and R1 reads 1.25 amps
What is the voltage drop across R1?
Answer |
 |
|
|
A. |
0.63 ohms |
C. |
8.50 volts |
|
B. |
8.00 volts |
D. |
10.0 volts |
|
|
|
|
|
| 86. |
The circuit to the right has a 15.0
volt battery.
R1 is 2.00 ohms
R2 is 4.00 ohms
R3 is 1.00 ohms
What is the current in the branch with R2?
Answer |
 |
|
|
A. |
2.15 amps |
C. |
15.00 amps |
|
B. |
3.75 amps |
D. |
26.25 amps |
|
|
|
|
|
| 87. |
The circuit to the right has 2.00 amps
flowing through R1.
R1 is 1.00 ohms
R2 is 2.00 ohms
R3 is 3.00 ohms
R4 is 1.00 ohms
R5 is 2.00 ohms
What voltage battery is necessary to power the circuit?
Answer |
 |
|
|
A. |
1.11 volts |
C. |
8.66 volts |
|
B. |
2.00 volts |
D. |
18.0 volts |
|
|
|
|
|
| 88. |
| The voltmeter to the right measures
12.0 volts with the switch open and 11.5 volts when the switch
is closed with R = 4.00 ohm. What is the internal resistance,
r?
A. 0.17 ohms
C. 3.00 ohms
B. 0.33 ohms
D. 3.83 ohms
Answer |
 |
|
|
|
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| 89. |
| Which of the following is a valid
Kirchoff Junction Equation?
A. I3 =
I4 + I7
B. I5 + I6 = I7
+ I8
C. I1 = I2
+ I6
D. I8 + I4
= I1
Answer
|
 |
|
|
|
|
|
|
| 90. |
| Which of the following is a valid
Kirchoff Loop Equation?
A. V1
- I5R5 + I3R3
= 0
B. V2 - I1R1
- I6R6 = 0
C. V1 - I6R6
+ I2R2 - I3R3
= 0
D. V1 - V2
- I4R4 = 0
Answer |
|
|
