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Energy and Power

Energy and Power
The power rating of a carbon-composition resistor that is to handle up to 1.2 W should be

1 W
5 W
2 W
0.5 W

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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
4.8 W
150 mW
15 mW

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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?

8.4 kWh
20.16 kWh
201.6 kWh
2.01 kWh

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Energy and Power
A 3.3 k resistor dissipates 0.25 W. The current is

87 mA
8.7 mA
8.7 A
8.7 µA

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Energy and Power
In 40 kW, there are

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

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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?

252 kWh
12.85 kWh
535 kWh
1.286 kWh

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