A microwave uses 450 KJ of electric energy in 5 minutes. Calculate its power rating.

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

Electric energy consumed, E = 450 KJ

                                              = 450 x 1000 J = 450000 J

Time taken, t = 5 minutes = 5 x 60 sec = 300 sec

Power, P = E/t

               = 450000/300 = 1500 watts

Answered by  | 4th Jun, 2014, 03:23: PM

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