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Q. Kilowatt hour (kWh) represents the unit of which of the following?
Answer: Energy
Notes: The kilowatt hour is a composite unit of energy equivalent to one kilowatt (1 kW) of power sustained for one hour. One watt is equal to 1 J/s. One kilowatt hour is 3.6 megajoules. The kilowatt hour is commonly used as a billing unit for energy delivered to consumers by electric utilities.

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