An electric refrigerator rated 400w operates 8 hrs day
Asked by admin @ in Science viewed by 295 People
An electric refrigerator rated 400W operates 8 hours day . what is the cost of energy to operate it for the month of january at 30 rupees per kWh
Answered by admin @
Given,
Power = P = 400W = 400/1000 kW = 0.4 kW
Total time for which the refrigerator operated = t = 8 hours x 30 days = 240 h
Since, Energy consumed = P x t
E = 0.4 x 240 kWh = 96 kWh
Therefore, total cost required to operate the refrigerator for the month = 96 x 30 = 2880 INR.
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