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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

120 V
12 V
6 V
1.2 V

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

5,000 mW
50 mW
500 mW
5 mW

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Energy and Power
In 40 kW, there are

40,000 W
400 W
5,000 W
0.4 mW

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Energy and Power
A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume?

201.6 kWh
8.4 kWh
20.16 kWh
2.01 kWh

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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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Energy and Power
A 15 V source is connected across a 12 resistor. How much energy is used in three minutes?

5.6 Wh
0.938 Wh
938 Wh
56.25 Wh

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MORE MCQ ON Energy and Power

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