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Energy and Power

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

overheated
reversed
open
shorted

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

1.3 kWh
13.3 kWh
12 kWh
1.2 kWh

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

480 mW
All of these
480,000 µW
0.480 W

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Energy and Power
A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is

8.57%
85.7%
4.28%
42.85%

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

500 mW
50 mW
5 mW
5,000 mW

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

76.8 W
7.68 mW
7.68 W
768 mW

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MORE MCQ ON Energy and Power

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