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Question
Which of the following is non-ohmic resistance?
Options
Copper wire
Brass wire
Copper wire wound on an electromagnet
Constantan wire
MCQ
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Solution
Copper wire wound on an electromagnet
Explanation:
A copper wire wound on an electromagnet is treated as a non-ohmic resistor because it does not obey Ohm’s law. Copper, brass and constantan wires are treated as ohmic resistors.
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