an electric bulb draws a current of 0.8 A from 250V mains. The bulb is useed on a average 8 hours a day if energy costs Rs 3per kwh calculate the monthly bill for 30 day
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Rs.144
Explanation:
Power=voltage*current
=0.8*250=200W
To convert into kilo watts P=200/1000kW=1/5kW
Energy=P*t
= (1/5)*30*8
(must use in hours only)
= 48kWh
Cost=3*48=Rs 144
Hope it helps you!!!
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