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Energy and Power

Energy and Power
A 68 resistor is connected across the terminals of a 3 V battery. The power dissipation of the resistor is

226 mW
22.6 mW
13.2 mW
132 mW

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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?

1.286 kWh
535 kWh
12.85 kWh
252 kWh

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Energy and Power
When the current through a 12 k resistor is 8 mA, the power is

7.68 W
76.8 W
7.68 mW
768 mW

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Energy and Power
For 12 V and 40 mA, the power is

0.480 W
480 mW
All of these
480,000 µW

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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
2.01 kWh
8.4 kWh
20.16 kWh

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Energy and Power
In 0.025 W, there are

25 kW
25 mW
2,500 µW
0.00025 mW

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