Question

How does resistivity of a semiconductor vary with temperature?

Answer 1

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HERE IS YOUR ANSWER:-

The resistivity of semiconductor decreases with increase in temperature. This is so because of the energy gap between the conduction band and valence band, at very low temperatures they are almost empty, thus they carry no charge and resistivity is high, but due to the increase in temperature, more and more electrons jump to the conduction band. Thus due to increased charge carriers its resistivity decreases.

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