an electric heater of resistance 8 ohm draws 15 A from the service mains for 2 hrs. Calculate the rate at which heat is developed in the heater.
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R=8ohm
I=15A
Time=2h
H= I×I×R×T
H= 15×15×8×2
H=225×16
H=3600
I=15A
Time=2h
H= I×I×R×T
H= 15×15×8×2
H=225×16
H=3600
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