1.

An electric heater of resistance 8Omega draws 15 A from the service mains 2 hours. Calculate the rate at which heat is developed in the heater.

Answer»

SOLUTION :`P=E/t=(I^(2)Rt)/t=I^(2)R=15xx15xx8=1800W`
So, HEAT is developed at a RATE of 1800 J/sec.


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