# 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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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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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