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Energy and Power

Energy and Power
A 220 resistor dissipates 3 W. The voltage is

73.3 V
257 V
2.5 V
25.7 V

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

120 V
12 V
6 V
1.2 V

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Energy and Power
Three hundred joules of energy are consumed in 15 s. The power is

2,000 W
2 W
200 W
20 W

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

500 mW
5,000 mW
5 mW
50 mW

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Energy and Power
A 6 V battery is connected to a 300 load. Under these conditions, it is rated at 40 Ah. How long can it supply current to the load?

200 h
10 h
2,000 h
1 h

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

87 mA
8.7 A
8.7 mA
8.7 µA

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MORE MCQ ON Energy and Power

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