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Energy and Power

Energy and Power
A given power supply is capable of providing 6 A for 3.5 h. Its ampere-hour rating is

21 Ah
58 Ah
2.1 Ah
0.58 Ah

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

150 mW
480 mW
15 mW
4.8 W

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Energy and Power
If you used 600 W of power for 60 h, you have used

1 kWh
10 kWh
36 kWh
3.6 kWh

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

42.8 A
428 A
4.28 A
4.2 A

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Energy and Power
For 12 V and 40 mA, the power is

All of these
480,000 µW
0.480 W
480 mW

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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?

33
330
neither resistor
both resistors

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