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Energy and Power

Energy and Power
In 40 kW, there are

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

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Energy and Power
A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume?

201.6 kWh
8.4 kWh
20.16 kWh
2.01 kWh

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

1.2 kWh
12 kWh
13.3 kWh
1.3 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

150 mW
4.8 W
480 mW
15 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

5 W
1 W
0.5 W
2 W

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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?

10 h
200 h
1 h
2,000 h

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