Question

name and state the law relating heat dissipated in electric circuit with the current also write it's mathematical formula​

Answer 1

The law is joule's law of heating.

It states that heat produced in resistor is

1) directly proportional to the square for a given resistance

2) directly proportional to resistance for a given current

3) directly proportional to the time for which current flows

Answer 2

The law relating heat dissipated in electric circuit with the current is Joule's law of heating.

- The Joule's law of heating states that heat produced in a conductor is:

(a) directly proportional to the square of the flowing current.

(2) directly proportional to the time for which the current flows.

- So we have:

Heat generated, i.e. H ∝ I²

and H ∝ t

Combining both, we get:

⇒ H ∝ I²t

⇒ H = I²Rt

- So in easy terms, Joule's law states that the heat generated is equal to the product of square of the current with the resistance of conductor and the time for which the current flows.