Question

Explain the term heating effect of electric current derive an expression for the heating produced by electric current and state joules law explain why an inert gas like organ is filled in bulbs

Answer 1

Heating effect of electric current: It states that Heat is directly proportional to square of current flowing through the conductor , resistance of the conductor and time till which current flows through it.

EXPRESSION FOR JOULE'S LAW OF HEATING

H = I^2 R t

H: heat ,  

I : current  

R : resistance and

t : time

Inert gas is filled in electric bulbs because it absorbs excessive heating and prevents from overheating.

Answer 2

The answer to the question is in the picture

please refer to it