Question

name the application of heating effect of current

Answer 1

1. filament of electric bulb

Answer 2

Whenever a current flows in a conductor , heat energy is generated ,the heating effect of electrical current depends on three factors;

1) Resistance,R of conductor,

it increases with the increase in temperature.

2) The time for which current flows in the conductor

t is directly proportional to H.

3) Radius, area and higher the strength of current flowing per second ,higher the heating effect.

This is expressed by Joule law of heating i.e H= I^2 R t