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Semiconductors and Superconductors

The resistanc...

Question

The resistance of a semiconductor material (germanium or silicon)_______ with rise in temperature.

A

increases

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B

decreases

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C

remains the same

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D

first increases then decreases

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Solution

The correct option is B decreases
The resistance of the conductor increases with the rise in temperature, because temperature coefficient of resistance for conductor is positive but for semiconductors the temperature coefficient of resistance is negative. hence resistance is indirectly proportional to temperature.
due to that resistance decreases with increase in temperature.

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Similar questions

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Resistance of a semiconductor decreases with increase in temperature.

(b)

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Q. Consider the following statements.
1. In a semiconductor, the uppermost band is the valence band.
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3. With increase of temperature, the resistivity of a semiconductor decreases.
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Q. Statement-1: The resistivity of a semiconductor decreases with increases of temperature
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Q. Assertion :A pure semiconductor has negative temperature coefficient of resistance. Reason: In a semiconductor on raising the temperature, more charge carriers are released, conductance increases and resistance decreases.

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