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The difference in the variation of resistance with temperature in a metal and a semiconductor arises essentially due to the difference in the (A) crystal structure (B) variation of the number of charge carries with temperature (C) type of bonding (D) variation for scattering mechanism with temperature. ?

The difference in the variation of resistance with temperature in a metal and a semiconductor arises essentially due to the difference in the (A) crystal structure (B) variation of the number of charge carries with temperature (C) type of bonding (D) variation for scattering mechanism with temperature. ?

Grade:12

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
2 years ago
In metals, scattering increases with temperature and hence the flow of electrons in restricted. In semiconductors, the number of charge carriers increases with temperature which overcomes the effect of on increasing scattering and hence the resistivity of semiconductors decreases with an increase in temperature but that of metals increases.

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