Question

What are non ohmic conductors?
Gives few examples

Answer 1

The conductors which doesn't obey ohm's law are known as non ohomic conductors.

These conductors do not have a constant value for $\frac{V}{I}$ neither they have straight line when graphed V along y-axis and I along x-axis.

Few examples are :- Semiconductors, Transistors, Diodes, etc.

Answer 2

Conductors that do not obey Ohm's Law are called non - ohmic conductors.
It resistance is not constant, varies depending on current and voltage.

Example : diodes.