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In case of a semi conductor, which one of the following statements is wrong ?

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Resistivity is in between that of a conductor and insulator

Temperature coefficient of resistance is negative

Doping increases conductivity

At absolute zero it behaves as a conductor

answer is D.

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Detailed Solution

A semiconductor has enough free electrons at normal temperature to carry electricity.
A semiconductor behaves like an insulator at or near absolute zero..

Hence the correct answer is at absolute zero it behaves as an insulator not as a conductor.

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