Question

Differentiate ohmic and non- ohmic conductors.

Answer 1

Differences between ohmic and non-ohmic are:

Ohmic conductors	Non-ohmic conductors
1. They obey Ohm’s law.	1. They do not obey Ohm’s law.
2. The graph between V and I is a straight lipe passing through the origin.	2. Graph between V and I is not a straight line.
3. The value of resistance is constant and is independent of V and I.	3. The value of resistance is not constant and changes when voltage is applied.
4. At constant temperature all metals are ohmic conductors.	4. Vacuum tubes, semiconductors, transistors, electrolytes etc, are non-ohmic conductors.