# how does drift velocity of electron in a metallic conductor vary with temperature?

vd = (TeE)/m

where

vd = is drift velocity

e = charge of electron

E = electric field

m = mass of electron

T = relaxation time

which implies that drift velocity is directly proportional to relaxation time.

relaxation time is the time interval between successive collisions of an electron during its flow in a conductor. On increasing temperature, the electrons move faster and more collisions occur quickly.

Hence relaxation time decreases with increase in temperature

which implies that drift velocity also decreases with temperature.

• 42

I = neAVd

V/R = neAVd

Vd= V/RneA

as the temperature will increase resistance will increase ( due to more succesive collisions between the electrons ) .

so Vd will decrease

• 10
Drift velocity will remain same with the increase in temperature
• -13
I am sry for the answer,drift velocity will decrease with the increase in temperature
• -4
When temperature increases then the velocity of moving of electrons increses then the relaxation time decreases. As time decreses then drift velocity decreases because drift velocity =(eE ? relax ation time)?m
• -8
Hope this helps!

• 9
Jhinku
• -5