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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

30 W
300 kW
30 kW
3 W

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Energy and Power
How many watt-hours represent 65 W used for 18 h?

1,170 Wh
11.7 Wh
11,700 Wh
117,000 Wh

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

5,000 mW
5 mW
50 mW
500 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?

5.6 Wh
938 Wh
0.938 Wh
56.25 Wh

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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 3.3 k resistor dissipates 0.25 W. The current is

8.7 mA
87 mA
8.7 A
8.7 µA

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MORE MCQ ON Energy and Power

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