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Energy and Power

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?

200 h
2,000 h
10 h
1 h

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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 W
3 W
30 kW

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

6 V
120 V
1.2 V
12 V

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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%
4.28%
42.85%
85.7%

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

1 kWh
36 kWh
3.6 kWh
10 kWh

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Energy and Power
In 0.025 W, there are

25 mW
25 kW
0.00025 mW
2,500 µW

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MORE MCQ ON Energy and Power

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