Question

calculate the total energy consumed by following devices used for month of 30 days a)refrigirator of 150wats used for 24hours

Answer 1

Hi.

Power of Refrigerator = 150 W = 150/1000 kW

Time for which it was used = 24 hrs

Thus, Energy = Power * Time = (150*24)/(1000) = 3.6 kW H or 3.6 units.

or, 3.6 * 1000 * 3600 = 12960000 = 1.296 * 10⁷ Joules.

Hope it helps.