Q25 of 35 Page 93

What is the commercial unit of electrical energy? Represent it in terms of joules.

The commercial unit of electrical energy is Kilowatt hour (kWh). It can be converted into joules as follows:


1 kWh= 1000 watt seconds


1 kWh = 3.6 106 watt second


1 kWh =3.6 106 Joule


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