The commercial unit of energy is:

A. Watt B. Watt-hour


C. Kilowatt-hour D. Kilowatt

SI unit of energy is Joule.

Commercial unit of energy is KWh


1 KWh = 1 kW * 1 h


= 1000 W * 3600 s


1 watt – second = 1 Joule


1 kWh = 3600000 J

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