# 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 hea

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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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Rate of heat produced by a device is given by the expression for power as, P=I^(2)R
Where,
Rrsistance of the electric heater, R=8Omega
Current drown, I=15 A
P=(15)^(2)xx8=1800 J//s
Therefore, heat is produced by the heater at the rete of 1800 J/s.