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Energy and Power

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

1.2 V
12 V
120 V
6 V

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

4.2 A
42.8 A
4.28 A
428 A

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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?

33
neither resistor
330
both resistors

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Energy and Power
A 3.3 k resistor dissipates 0.25 W. The current is

8.7 µA
8.7 mA
87 mA
8.7 A

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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
0.5 W
1 W
2 W

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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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MORE MCQ ON Energy and Power

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