Question

In a semiconductor device that is biased with battery of Vo an electron will

1) move with an average constant drift velocity

2) move with a slight acceleration due to electric field

3) move with a slight deceleration due to photon scattering

4) will first accelerate then decelerate so that it's velocity remains constant

5) none of the above

Answer 1

Whenever a semiconductor device is biased with a battery of potential Vo carriers start moving and producing a current. Holes move in the direction of electric field and electron moves opposite to the direction of electric field and this motion of carrier describe as the drift velocity and it is constant because carries move in that direction in which they are supposed to go.

from the above explanation we can conclude that option 1 is correct

Drift Current:- Drift current is the current in semiconductor due to the drift or movement of charge carriers