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An electric heater of resistance 8 Omega draws 15 A from the service mains for 2 hours. Calculate the rate at which heat is developed in the heater. |
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Answer» SOLUTION :The rate at which heat is developed in the electric heater will be given by the power of the heater. Now, Power, `P = I^(2) XX R` `P= (15)^(2) xx 8` `P= 225 xx 8` `P = 1800 W` or `1800 J//s` THUS, the rate at which heatis developed in the heater is 1800 joules per second. |
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