The mobility of free electrons is greate...

The mobility of free electrons is greater then that of free holes because

A

they carry negative charge

B

they are light

C

their matual collisions are less

D

they require low energy to continue their motion

Text Solution

Verified by Experts

The correct Answer is:

D

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Knowledge Check

The mobility of free electron is greater than that of free holes because they

A

Carry negativ charge

B

Are light

C

Mutually collide less

D

Require low energy to continue their motion

SI unit of mobility of free electrons is

A

` m^(2) V^(-1) s^(-1)`

B

` m^(2) Vs^(-1)`

C

` m^(-2) V^(-1)s^(-1)`

D

` m^(-1) V^(-1) s^(-1)`

Mobility of free electrons in a conductor is

A

Directly proportional to electron density

B

Directly proportional to relaxation time

C

Inversely proportional to electron density

D

Inversely proportional to relaxation time

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