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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

15 mW
480 mW
4.8 W
150 mW

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

8.7 µA
8.7 A
87 mA
8.7 mA

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

428 A
42.8 A
4.2 A
4.28 A

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

2,000 W
200 W
2 W
20 W

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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

22.6 mW
13.2 mW
226 mW
132 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?

8.4 kWh
20.16 kWh
2.01 kWh
201.6 kWh

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