Question

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 carriers with temperature

(c) type of bonding

(d) variation of scattering mechanism with temperature

Answer 1

Correct Option (b) variation of the number of charge carriers with temperature

Explanation:

Metal has number of free electrons while semiconductor has not at room temperature. The difference in the variation of resistance with temperature in metal and semiconductor is caused due to difference in the variation of the number of charge carriers with temperature.