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Energy and Power

Energy and Power
A 220 resistor dissipates 3 W. The voltage is

2.5 V
73.3 V
257 V
25.7 V

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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
21 Ah
0.58 Ah
58 Ah

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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

42.85%
8.57%
4.28%
85.7%

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Energy and Power
How much continuous current can be drawn from a 60 Ah battery for 14 h?

4.2 A
42.8 A
428 A
4.28 A

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

20 W
2,000 W
2 W
200 W

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

1.3 kWh
13.3 kWh
12 kWh
1.2 kWh

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MORE MCQ ON Energy and Power

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