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Question

By increasing the temperature, the specific resistance of a conductor _____ and that of a semiconductor _______


A
Increases for both
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B
Decreases for both
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C
Increases, decreases
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D
Decreases, increases
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Solution

The correct option is C Increases, decreases
Because specific resistance depends upon value of $$\alpha$$ the temperature coefficient of the resistance. the value $$\alpha$$ for conductors is positive and for semiconductors the value of $$\alpha$$ is negative.
hence By increasing the temperature, the specific resistance of a conductor increases and that of a semiconductor decreases.

Physics

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