The example for non-ohmic resistance is:
Correct answer: B. Diode
- A. Copper wire
- B. Diode
- C. Carbon resistance
- D. Silver wire
Explanation
Non-ohmic devices do not have a constant resistance; their voltage-current relationship is not linear. A semiconductor diode is a classic example, as its resistance changes dramatically depending on the direction and magnitude of the applied voltage.
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About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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