Question

15. State joule's law of heating effect. Calculate the heat developed by electric heater of resistance
500 ohms and draws a current of 5A for 1 hour.
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Answer 1

Explanation:

According to joules law of heating, the amount of heat energy produced in a given resistors .

given that,

• R= 500 ohm
• I= 5 A
• t= 1 hour = 60sec

find,

• Heat = ?

H= I^2 Rt

H= 5*5*500*60

H= 7,50,000 joule

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