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Questions
Give two differences between an ohmic and non-ohmic resistor.
Write three differences between ohmic and non-ohmic resistors.
Distinguish Between
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Solution
| Ohmic resistor | Non-ohmic resistor | |
| 1. | `V/I` remains constant regardless of the value of V or I, as it follows Ohm's law. | `V/I` is not constant and does not remain the same for all values of V or I since it does not follow Ohm's law. |
| 2. | A straight line represents the relationship between current I and projected V. | A straight line does not appear on the graph that plots current I against potential difference. |
| 3. | The resistance remains constant and does not change with the variation in voltage or current. | The resistance changes with the variation in voltage or current (shows dynamic resistance). |
| 4. | Pure metallic conductors like copper, silver, and aluminium at a constant temperature. | Electronic devices like junction diodes, transistors, filament lamps, and LEDs. |
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| (a) | (b) |
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