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Energy and Power

Energy and Power
A 120 resistor must carry a maximum current of 25 mA. Its rating should be at least

150 mW
15 mW
480 mW
4.8 W

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

reversed
shorted
open
overheated

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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?

both resistors
33
330
neither resistor

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Energy and Power
A 68 resistor is connected across the terminals of a 3 V battery. The power dissipation of the resistor is

13.2 mW
22.6 mW
132 mW
226 mW

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

5 mW
5,000 mW
500 mW
50 mW

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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?

56.25 Wh
5.6 Wh
938 Wh
0.938 Wh

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MORE MCQ ON Energy and Power

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