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

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asked Jun 24, 2017 in Physics by Kundan kumar (49,132 points) ● 34 ● 441 ● 1403

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answered Jun 24, 2017 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 26
selected Jun 28, 2017 by Kundan kumar
 
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Heat developed in the heater is given by H = I2Rt Where, I = 15 A, R = 8 Ω and time t = 2 hours The rate at which heat is developed is given by

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