Introduction:
In electrical engineering, Joule’s law is a mathematical explanation of how quickly resistance in a circuit converts electrical energy to heat energy.
In 1840, English physicist James Prescott Joule established that the amount of heat generated per second in a wire carrying a current is proportional to the electrical resistance of the wire and the square of the current. He calculated that the heat emitted every second equals the absorbed electric power, also known as power loss.
Joule’s law of heating equation:
The heat produced by the current flow in an electric wire is measured in Joules.
The Joule’s law of heating expression is as follows: