Question

Explain the variation of resistivity of metals, semiconductors, insulators and
electrolytes with the change in temperature. Define temperature coefficient of resistivity.
PLS ANSWER IT SOON. VERY URGENT.​

Answer 1

Answer:

Explanation:

Consider j=resistivity,a=Collison time

Since resistivity depends on only temperature and nature of material

So by formula j=m/ne²a

So in conductors with increasing temperature Collison time decraese so resistivity increases

In semi conductors with increase in temperature no. Of free electrons increases so resistivity decreases.

In insulator it is unaffected by temperature.

Answer 2

Consider j=resistivity,a=Collison time

Since resistivity depends on only temperature and nature of material

So by formula j=m/ne²a

So in conductors with increasing temperature Collison time decraese so resistivity increases

In semi conductors with increase in temperature no. Of free electrons increases so resistivity decreases.

In insulator it is unaffected by temperature.