an electric refrigerator rated 400 w operates 12 hour 1 day and an electric bulb rated 60 w operates 10hr/day. what is the cost of energy to operate it for 30 days at rs 4 per kwh
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Answer:
Rs.288
Explanation:
Energy of one day =Power×Time=400W×8h=3.2KWh
Energy of 30 days =3.2KWh×30=96KWh
So, cost of the energy =96×3=Rs.288
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