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Energy and Power

Energy and Power
How many watt-hours represent 65 W used for 18 h?

1,170 Wh
11.7 Wh
117,000 Wh
11,700 Wh

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Energy and Power
If it takes 400 ms to use 12,000 J of energy, the power is

300 kW
30 kW
30 W
3 W

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Energy and Power
In 40 kW, there are

40,000 W
400 W
0.4 mW
5,000 W

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Energy and Power
In 0.025 W, there are

25 mW
25 kW
2,500 µW
0.00025 mW

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Energy and Power
The power rating of a carbon-composition resistor that is to handle up to 1.2 W should be

0.5 W
1 W
5 W
2 W

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Energy and Power
A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is

4.28%
42.85%
8.57%
85.7%

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MORE MCQ ON Energy and Power

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