Question

What are ohmic and non-ohmic conductors. Draw V-I graph for both the coductors.

Answer 1

Ohmic conductors are those which follow ohm's law. In other words, voltage and current varies linearly in ohmic conductors/material.
Ex - Nichrome, copper etc.

Non-ohmic conductors are those which does not follow ohm's law. Current depends on voltage but it does not vary linearly.
Ex - Semiconductors, diodes etc.

Graph for ohmic conductor.


Graph for Non-ohmic conductor