Question

How to proof H = I²Rt
Class 10th ch1

Answer 1

Hey mate!!!
Here's your answer...

H = I2RT   Since , V = IR , so, R = V/I   H = I2 ×(V/I)T = VIT   Now, I = V/R   So, H = V×(V/R)T =( V2/R)T.

Hope this will help you.
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Answer 2

when a current is passed through a high resistance wire like - nichrome wire , then the wire becomes very hot and produces heat. this is called the heating effect of current.

Amount of heat produced on (a)- current flowing I, (b)- resistance of that wire R , and (c)- time T .

If on applying , a potential difference V across the ends of a conductor of resistance R , the current I flows for a time T , then as per Joule's law of heating the electric energy consumed .

H= I ^2 RT