**Joule’s Law of Heating**

The heat that is generated because of the current flow in an electric wire is described in Joules. The mathematical expression of Joule’s law is as explained below.

**Joule’s first law**

The joule’s first law shows the relationship between heat produced by a flowing electric current through a conductor.

Q = I2 R T

Where,

Q indicates the amount of heat

I show electric current

R is the amount of electric resistance in the conductor

T denotes time

-The amount of generated heat is proportional to wire’s electrical resistance when the current in the circuit and the flow of current is not changed.

-The amount of generated heat in a conductor carrying current is proportional to the square of the current flow through the circuit when the electrical resistance and current supply is constant.

-The amount of heat produced because of the current flow is proportional to the time of flow when the resistance and current flow is kept constant