what is the heating effect of current? list two electrical appliances which work on this effect
Answers
When an electric current is passed through a conductor, the conductor becomes hot after some time and produces heat. This happens due to the conversion of some amount of electric energy, passing through the conductor, into heat energy. This effect of electric current is called heating effect of electric current.
The heating effect of electric current depends on three factors:
1) The resistance, R of the conductor. A higher resistance produces more heat
2) The time, t for which current flows. The longer the time the larger the amount of heat produced
3)The amount of current, I. the higher the current the larger the amount of heat generated
Heating effect of 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. It quantifies the heating effect of electric current.
Two appliances which work on this effect are electric heater and electric toaster.
Answer:
The conversion of electric energy into heat energy in a purely resistive circuit is known as heating effect of electric current. Ex:- Electric iron and electric heater are the examples of this effect.