Question

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???

Answer 1

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!!