Question

What is Ohm's law? Write any two limitations of it.

Answer 1

According to ohm's law, voltage induced across a conductor is proportional to the current it carries.

$V\propto I$

$V=IR$

where $R:$ Resistance which is constant for a given conductor of fixed geometry and at fixed temperature.

Limitations of Ohm's law are:

1. It is applicable only for linear conductors.

2. It is not applicable if temperature is not constant.