an electric referigerator of power 400w is allowed to run 10hrs.per day.what is the cost of energy to operatevit for 30 days at Rs4.00 per kwh???
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400 W = 0.4 KW.
Time = 10 hrs/day
No. of days = 30
Rate = ₹4 /kwh
Cost = ?
Energy consumed = kwh
= 0.4 x 10
= 4 units
Total energy consumed in 30 days
= 30 x 4
= 120 units
Cost = ₹ 4 x 120
= ₹480
Therefore the cost is ₹480
HOPE IT HELPS YOU!!
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