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An electric heater of resistance 8Omega ...

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.

Text Solution

Verified by Experts

Given , Resistance, `R=8Omega`
Electric current (I)=15A
Time (t)`=2h=2xx60xx60s=7200s`
Rate at which heat is developed in heater=?
We know that rate of heat produced`=I^2R=(15)2xx8Omega=225xx8J//s=1800J//s` Answer
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