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Physical Properties of Boron Family

How does the ...

Question

How does the electrical conductivity of semiconductors vary with temperature?

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Solution

Electrical conductivity of the semiconductors increases with increase in the temperature. The conductivity of the semiconductors is due to the presence of the impurities and defects. As number of defects increases with the temperature, conductivity increases.

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Why does the electrical conductivity of semiconductors increase with rise in temperature ?

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Q. Assertion: Electrical conductivity of semiconductors decreases with increasing temperature.
Reason: With increase in temperature, large number of electrons from the valence band can jump to the conduction band.

STATEMENT-1 : Electrical conductivity of semiconductors increases with increasing temperature.
STATEMENT-2 : With increase in temperature, large number of electrons from the valence band can jump to the conduction band.

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