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Energy and Power

Energy and Power
Three hundred joules of energy are consumed in 15 s. The power is

200 W
2 W
2,000 W
20 W

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

36 kWh
1 kWh
3.6 kWh
10 kWh

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Energy and Power
For 12 V and 40 mA, the power is

480 mW
All of these
0.480 W
480,000 µW

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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

8.57%
42.85%
4.28%
85.7%

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Energy and Power
A 120 resistor must carry a maximum current of 25 mA. Its rating should be at least

480 mW
15 mW
150 mW
4.8 W

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Energy and Power
A given power supply is capable of providing 6 A for 3.5 h. Its ampere-hour rating is

2.1 Ah
58 Ah
0.58 Ah
21 Ah

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MORE MCQ ON Energy and Power

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