Question

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Answer 1

HERE IS YOUR ANSWER:

Commercial Unit of Energy. The SI unit joule is too small to express very large quantities of energy. Hence we use a bigger unit called

kilowatt hour (kWh) to express energy. 1 kWh is the amount of energy consumed by an electrical gadget in one hour at the rate of 1000 J/s or 1kW.

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Answer 2

Comm. Unit is kWh

S.I unit is joule

1 kWh = 3.6*10^6