In a house there are 4lamps 20watt,2lamps 10watt,3lamps 40watt,areused in 5hours everyday.If the electric company charge 0.092 per kwh,then what the cost of using electric energy during 1 month(30days).
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Answer:
80+20+120=220watts
0.22kw
electric energy= power× time
0.22×5= 1.1 kwH
consumption of month= 33 unit
Bill= 33×0.092= rupees 3.036
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