Question

How does the resistivity of a material does changes with change in temperature

Answer 1

Answer:

It is a general rule that resistivity increases with increase in temperature.i.e, they are directly proportional.

Explanation:

Answer 2

Answer with Explanation:

Resistivity of material:

$\rho=\frac{m}{ne^2\tau}$

Where m=Mass of conduction electrons

n=Number of electrons

e=Charge on electron

$\tau$=Relaxation time

When temperature increase then relaxation time decrease .

When relaxation time decrease then resistivity of material increases.

When temperature decrease then relaxation increases .

When relaxation increases then the resistivity of material decreases.

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