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Question

The unit in which the domestic electric meters measure the electrical energy consumed and its value in SI unit is:


A

Kilowatt-hour (kWh) and 1 kWh = 3.6 X 106J

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B

Watt-hour (Wh) and 1 Wh = 3.6 X 103J

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C

Joule and 1KJ = 1000J

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D

Joule and 1 J =1000kJ

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Solution

The correct option is A

Kilowatt-hour (kWh) and 1 kWh = 3.6 X 106J


Kilowatt-hour (kWh) is the commercial unit of electrical energy and 1 kWh =1000 W x 3600 s = 3.6 X 106J


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