Answers

2016-04-05T19:32:18+05:30
SI unit of energy is Joule Commercial unit of energy is kWh 1 kWh = 1 kW x 1 h = 1000 W x 3600 s 1 watt - second = 1 joule 1 kWh = 3600000 J Acirc;
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2016-04-05T19:38:16+05:30
1 KWh = 1 KW (1 h)
            = 1000 W(3600 s)
            =3600000 J
1KWh =3×10 power 6 J
1 4 1
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KWh is the commercial unit of electrical energy .
1 KW = 1000 W
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