Question

Give two differences between an ohmic and non-ohmic resistor.

Answer 1

1. Ohmic resistor obeys Ohm’s law i.e., V/I is constant for all values of V or I, whereas non-ohmic resistor does not obey Ohm’s law i.e., V/I is not same for all values of V or I.
2. For an ohmic resistor, the resistance is same irrespective of the value of V or I, while for a non-ohmic resistor, the resistance is different for different values of V or I.