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Immediately answer plzzz..What is the relation between S.I. unit and commercial unit of energy.

One watt is one Joule per second. So one watt hour is 3,600 joules per second and one kilowatt hour is 3,600,000 Joules per second. A kilowatt hour (kwh) is the unit of measure used on your electric bill


1kwh = 1000 × 3600
= 3.6 × 10^6
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