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Energy and Power

Energy and Power
When the current through a 12 k resistor is 8 mA, the power is

7.68 W
76.8 W
7.68 mW
768 mW

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

4.2 A
428 A
42.8 A
4.28 A

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

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

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Energy and Power
If you used 400 W of power for 30 h, you have used

12 kWh
1.2 kWh
13.3 kWh
1.3 kWh

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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
15 mW
4.8 W
480 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
2,000 h
10 h
1 h

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