What are ohmic and non-ohmic resistance?
Ohmic Conductors | Non Ohmic Conductors |
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1. Conductors that obey Ohm’s Law are called Ohmic conductors. | 1. Conductors which do not obey Ohm’s Law are called Non-Ohmic conductors. |
2. In Ohmic conductors, current is proportional to voltage. | 2. In Non-Ohmic conductors, current is not proportional to voltage. |
3. Magnitude of current remains unchanged when current or voltage is reversed in Ohmic conductors. | 3. Magnitude of current changeswhen current or voltage is reversed in Non-Ohmic conductors. |
4. In Ohmic conductors, temperature affects current and resistance. | 4. In Non-Ohmic conductors, different factors affect current and resistance. |