kilowatt-hour is the unit of ____.

potential difference

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electric power

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electric energy

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charge

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Solution

The correct option is C electric energy
$Kilowatt hour$ is the $c o m m e r c i a l$ unit of $e l e c t r i c a l$ ENERGY.
As the power $(m e a n s$ $\frac{W o r k}{t i m e} = \frac{e n e r g y}{t i m e})$
so $e n e r g y = p o w e r \times t i m e$

$so unit of energy= unit of power unit of time =watt second$
Kilowatt-hour is just $3600 \times 1000$ times of the above value of energy.

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