Discussion
Kilowatt ? hour is a unit of
Answer: A
The kilowatt-hour is a unit of energy.
It is power multiplied by time, so \[1\ \mathrm{kWh} = 1000\ \mathrm{W} \times 3600\ \mathrm{s} = 3.6\times10^{6}\ \mathrm{J}\] The kilowatt is the unit of power; the electricity bill charges for energy consumed, which is why the meter counts kilowatt-hours.
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