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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

132 mW
226 mW
22.6 mW
13.2 mW

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Energy and Power
A half-watt is equal to how many milliwatts?

5,000 mW
500 mW
50 mW
5 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
12.85 kWh
252 kWh
535 kWh

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Energy and Power
In 40 kW, there are

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

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Energy and Power
How much continuous current can be drawn from a 60 Ah battery for 14 h?

42.8 A
4.2 A
428 A
4.28 A

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

0.480 W
All of these
480,000 µW
480 mW

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