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Energy and Power

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?

2,000 h
1 h
200 h
10 h

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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
132 mW
22.6 mW
226 mW

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Energy and Power
When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is

reversed
overheated
open
shorted

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Energy and Power
A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is

42.85%
8.57%
4.28%
85.7%

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Energy and Power
In 0.025 W, there are

2,500 µW
0.00025 mW
25 kW
25 mW

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

12 kWh
13.3 kWh
1.2 kWh
1.3 kWh

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MORE MCQ ON Energy and Power

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