Question

What is meant by heating effect of electric current?

Answer 1

1. When current passes through a conductor, a part of the electrical energy from the source supply is used in doing useful work and the rest of the electrical energy is converted into heat energy. This is known as the heating effect of electric current.
2. This raises the temperature of the conductor.
3. According to Joule's law of heating, the amount of heat produced$\left(H\right)$ in a conductor is

$H=I^{2}Rt$

where $I$ is the current flowing through the conductor, $R$ is the resistance and $t$ is the time for which current flows.