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Electronics
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Ohm's Law
Comments
Question
Using 4 kWh of power is equivalent to using 2000 W of power for 2 h.
Options
A. True
B. False
Correct Answer
True
Ohm's Law problems
Search Results
1. The value of a resistor is in direct proportion to its power handling capabilities.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: False
2. Current and voltage have a nonlinear relationship.
Options
A. True
B. False
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Correct Answer: False
3. Power is a measure of how fast current is flowing.
Options
A. True
B. False
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Correct Answer: False
4. The voltage drop across a resistor is simply a difference of potential across that resistor.
Options
A. True
B. False
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Correct Answer: True
5. Generally, increasing the resistance in a circuit will decrease the current.
Options
A. True
B. False
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Discuss
Correct Answer: True
6. ___ is a better way of expressing 7,500,000 W.
Options
A. 7.5 kW
B. 7,500 MW
C. 7,500 GW
D. 7.5 MW
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Discuss
Correct Answer: 7.5 MW
7. The voltage across a ___ resistor is 12 V and the current through it is 500 µA.
Options
A. 600 Ω
B. 2.4 kΩ
C. 6 kΩ
D. 24 kΩ
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Correct Answer: 24 kΩ
8. The ___ rating of a resistor will increase with an increase in the surface area of the resistor.
Options
A. resistance
B. current
C. power
D. voltage
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Correct Answer: power
9. If the voltage across a resistor ___, the current flowing through it will increase.
Options
A. increases
B. decreases
C. stays the same
D. Not enough information
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Correct Answer: increases
10.
The power rating for the resistor in the given circuit should be at least ___.
Options
A. 1/4 W
B. 1/2 W
C. 1 W
D. 2 W
Show Answer
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Correct Answer: 1/2 W
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