Question

derive an expression for the heat produced by electric current and state Joule's law

Answer 1

H is directly proportional to square of current in conductor
H is directly proportional to resistance of that wire
H is directly proportional to time for it is operated
H=i^2rt this is joule's law of heating
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Answer 2

H= I×I × r × t;
I is current;
r is resistance;
t is time period;
By joule's law of heating..we get,
I,T,R..are directly propotional to heat(H)
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