With increase in temperature, the electrical conductivity of semiconductors_____________________?
Correct answer: A. Increases
- A. Increases
- B. Decreases
- C. Remain constant
- D. Either A. or B. depends on the type of semi-conductor
Explanation
Heating a semiconductor generates additional electron-hole charge carriers, so its electrical conductivity increases with temperature. This is opposite to the usual behavior of metallic conductors, whose conductivity decreases as lattice vibrations increase.
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