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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
At the end of a 14 day period, your utility bill shows that you have used 18 kWh. What is your average daily power?

12.85 kWh
535 kWh
252 kWh
1.286 kWh

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

4.8 W
150 mW
15 mW
480 mW

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

1.3 kWh
12 kWh
13.3 kWh
1.2 kWh

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

58 Ah
0.58 Ah
21 Ah
2.1 Ah

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MORE MCQ ON Energy and Power

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