An electric refrigerator rated 400W operates 8hrs per day what is the cost of energy to operate it for 30 days at Rs. 3 per kwh
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power = 400W= 400/1000= 0.4KWH
time= 30x 8h = 240
P x t= 0.4 x 240 = 96 kwh
cost = 96 x 3 = RS.288
time= 30x 8h = 240
P x t= 0.4 x 240 = 96 kwh
cost = 96 x 3 = RS.288
musanif:
thanks
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