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Question

How is One kilowatt hour related to joule


A

1 kWh = 3.6 x 10-6 J

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B

1 kWh = 3.6 x 105 J

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C

1 kWh = 3.6 x 106 J

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D

1 kWh = 3.6 x 108 J

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Solution

Correct option (C)

1 kWh = 3.6 x 106 J

1kWh = 1kW x 1h = 1000 W x 3600 s

=1000 js-1 x 3600 s = 3.6 x 106J

kWh and J both are unit of energy.


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