Question

Write Joule's law of heating.

Answer 1

When an electric current passes through a conductor for some time, the conductor gets heated up. Thus heating of a conductor due to the flow of electric current through it is known as Joule's law of heating.
Heat generated $H=i^{2}Rt$
where $i$ is the amount of current flowing though the conductor, $R$ is the resistance of conductor and $t$ is the time for which the current has flown.