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Conductors and Insulators

how temp matt...

Question

how temp matter on resistance of material

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Solution

The temperature coefficient of resistance of the material of a substance is the ratio of increase in resistance per unit increase in temperature to its resistance at 0⁰c.
The temperature co-efficient of resistance is very small in the case of alloys.
The resistivity of semi-conductors also decrease with the increase in temperature
When the temperature is increased more collision of electrons take place thereby increasing the resistance.

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