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Energy and Power

Energy and Power
If it takes 400 ms to use 12,000 J of energy, the power is

300 kW
3 W
30 W
30 kW

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

480,000 µW
All of these
480 mW
0.480 W

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Energy and Power
A 33 half-watt resistor and a 330 half-watt resistor are connected across a 12 V source. Which one(s) will overheat?

neither resistor
33
both resistors
330

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Energy and Power
A 75 load uses 2 W of power. The output voltage of the power supply is approximately

1.2 V
6 V
12 V
120 V

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

5 W
1 W
2 W
0.5 W

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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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MORE MCQ ON Energy and Power

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