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Electronics - Ohm's Law

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Exercise :: Ohm's Law - General Questions

16. 

A battery's capacity to deliver power is measured in
A. kWh
B. Ah
C. Wh
D. Vh

Answer: Option B

Explanation:

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17. 

Power supplies are regulated to prevent the output voltage from changing due to changes in the
A. line voltage
B. supply load
C. frequency
D. both line voltage and supply load

Answer: Option D

Explanation:

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18. 

What is the power in the given circuit?
A. 3.92 kW
B. 280 W
C. 28.6 W
D. 9.8 W

Answer: Option D

Explanation:

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19. 

If current through a resistance is halved
A. the resistance is halved
B. the voltage is halved
C. the voltage doubles
D. none of the above

Answer: Option B

Explanation:

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20. 

Ohm's law is a relationship between
A. voltage, current, and time
B. power, current, and resistance
C. resistance, time, and current
D. voltage, current, and resistance

Answer: Option D

Explanation:

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