Question

what is heating effect of electric current? find an expression for the amount of heat produced? name some appliances based on the heating effect of current​

Answer 1

When an electric current is passed through a conductor, the conductor becomes hot after some time and produce heat. This happens due to the conversion of some electric energy passing through the conductor into heat energy. This effect of electric current is called heating effect of current.

Let 'v' is p.d across a conductor . Resistance of it is 'r'.

by ohms law =

I = V / R.

W = v.Q

V = IR and Q = It

W = IR.IT =I2RT

Heating effect of electric current is used in many appliances . But it can cause short circuit or severe shock.

Three appliances which uses the 'heating effect of current' are light bulb, electric toaster and electric iron.

Answer 2

Heating effect of electric current

Explanation:

Due to flow of electric current in a conductor, it becomes hot after some time and then produces heat. It is due to the conversion electric energy passing through the conductor into heat energy. This effect is called heating effects of current. The expression for the amount of heat produced is given by :

$Q=i^2Rt$

i is the current

R is the resistance

t is the time for which current flows

Light bulb, electric iron, heater are some devices that are based on the heating effect of current.

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Heating effect of electric current

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