Question

Average collision time for electrons in a
conductor under a certain potential
difference is found to be 10-15 s. The mobility
of electron in metal conductor is
INCERT Pg. 1011
(1) 1.5 * 10-3 m?N S
(2) 2.2 x 10-3 m / s
(3) 2.9 x 10-3 m / s
(4) 1.75 x 10-4 m / s​

Answer 1

Answer:

option 4

find the attached ans

Answer 2

Answer:

The correct option is 4) µ = 1.75 x 10^-4 m² /V s

Explanation:

Average collusion time:

Average collusion time is the time taken by electron between two successive collisions.

Mobility of electrons:

Mobility of electrons can be defined as how quickly an electron can move through a metal or semiconductor when an electric field is applied.

Given data:

Average collusion time τ = 10^-15 s

Mobility µ= ?

Formula for mobility of electrons:

Mobility µ = e×τ/m

• µ is the mobility of the electrons
• τ is the average collusion time of the electrons
• m is the mass of the electrons
• e is the charge of the electron

µ= 1.6×10^-19×10^-15/9.11×10^-31

On solving ve get µ = 1.75 x 10^-4 m² /V s

Project code #SPJ2