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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
6 V
1.2 V
12 V

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

7.68 mW
7.68 W
768 mW
76.8 W

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Energy and Power
At the end of a 14 day period, your utility bill shows that you have used 18 kWh. What is your average daily power?

252 kWh
535 kWh
1.286 kWh
12.85 kWh

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

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

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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?

1 h
2,000 h
10 h
200 h

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

2.1 Ah
58 Ah
0.58 Ah
21 Ah

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MORE MCQ ON Energy and Power

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