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CBSE Class 9 Answered

Which appliance consumes more energy: a 100 watt electric bulb or a 150 watt electric iron in a minute?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer
Power = Energy consumed / Time taken
So Energy consumed = power x time
1) Energy consumed by bulb = 100 W x 60s = 6000 J
2) Energy consumed by electric iron = 150 W x 60s = 9000 J
 
Thus, an electric iron consumes more energy.
Answered by | 04 Jun, 2014, 03:23: PM
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