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Energy and Power

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

480 mW
480,000 µW
All of these
0.480 W

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Energy and Power
When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is

open
reversed
overheated
shorted

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

500 mW
5 mW
50 mW
5,000 mW

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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 W
3 W
30 kW

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Energy and Power
A 15 V source is connected across a 12 resistor. How much energy is used in three minutes?

0.938 Wh
938 Wh
56.25 Wh
5.6 Wh

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Energy and Power
In 0.025 W, there are

25 kW
25 mW
0.00025 mW
2,500 µW

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