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Energy and Power

Energy and Power
If you used 400 W of power for 30 h, you have used

13.3 kWh
12 kWh
1.3 kWh
1.2 kWh

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Energy and Power
A 75 load uses 2 W of power. The output voltage of the power supply is approximately

12 V
120 V
1.2 V
6 V

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Energy and Power
A half-watt is equal to how many milliwatts?

50 mW
5 mW
500 mW
5,000 mW

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Energy and Power
If you used 600 W of power for 60 h, you have used

1 kWh
10 kWh
36 kWh
3.6 kWh

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Energy and Power
A 6 V battery is connected to a 300 load. Under these conditions, it is rated at 40 Ah. How long can it supply current to the load?

1 h
10 h
200 h
2,000 h

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Energy and Power
A 33 half-watt resistor and a 330 half-watt resistor are connected across a 12 V source. Which one(s) will overheat?

330
neither resistor
33
both resistors

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MORE MCQ ON Energy and Power

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