An electric field us applied to a semiconductor.Let the number of charge carriers be n and the average drift speed be v.If the temperature is increased,

Options

A. n will increase but v will decrease
B. n will decrease but v will increase
C. Both n and v will increase
D. Both n and v will decrease

Answer

A

Explanation

On raising the temperature of the semiconductor, covalent bonds start breaking up and thus more charge carriers release. This will increase the value of n and a result the rate of collision of charge carriers will increase. This will decrease the drift speed v.