Question

please explain heating effect of electric current in full detail how energy comes and how it converts to heat

Answer 1

When current flows through a conductor, heat energy is generated in the conductor. The heating effect of an electric current depends on three factors:

The resistance, R of the conductor. A higher resistance produces more heat.The time, t for which current flows. The longer the time the larger the amount of heat producedThe amount of current, I. the higher the current the larger the amount of heat generated.

Hence the heating effect produced by an electric current, I through a conductor of resistance, R for a time, t is given by H = I2Rt. This equation is called the Joule’s equation of electrical heating.......

i hope its helpful...cheers!

Answer 2

Heating effect of electric current is also known as Joules Law  of Heating.It states that the heat is directly proportion to
1.given resistance of the current
2.current for the given resistance 
3.time that current takes to flow through electric circuit

Electrical current is the flow of electrons through a substance that will permit that flow. The substance is called a conductor. Some conductors are better than others, but none are perfect, and all resist electron flow to some extent. When electron flow is resisted, some of the energy in the electrons does not travel through all the way. Because energy is conserved, the energy that was moving the electrons forward is converted to heat energy