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I want to know why does resistivity change with temperature

I want to know why does resistivity change with temperature

Grade:12th pass

1 Answers

Antara
50 Points
2 years ago
For conductors as temperature increases the thermal energy of electrons increases resulting in greater no of collissions between them increasing the hindrance and thus resistivity increases and vice versa if temp decreases.For semiconductors as temperature increases, the no of free electrons increases so resistivity decreases .This is the internal mechanism behind change of resistivity with temp. 

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