Difine energy and establish relationship between S.I unit and commercial unit of energy
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energy
It is amount of work done by one
It's SI unit is joule
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Commercial unit of energy in 1 kWh.
One kilowatt hour is the amount of energy consumed by an agent in one hour working at a constant rate of one kilowatt (i.e. at the rate of 1000 J in one second).
SI unit of energy is joule.
The energy consumed by device of power 500W for 30 days
E = P x t
begin mathsize 12px style 500 over 1000 cross times 10 cross times 30 equals 150 space kWh end style
Explanation:
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