Question

A) derive the expression for joules law of heating.

Answer 1

Answer:

using formula H is directly proportional to I2RT

Answer 2

Answer:

Explanation:

we consider a current (I) is flowing a through  resister of a resistance (R).

let the potential difference across it be (V).

let (T) be the time during which a charge (Q) flow across

the workdone in moving the chrage (Q)  through a potential difference (V)

                                W=VQ-------------1

the electric charge (Q)  flowing through  the resister for time (T) is

                          Q=IT------------------------2

then we substitute the eq no 1 and 2

next try yourself any doubt pls message me i will help u ok