Question

The drift velocity should be in the same direction as the applied force. a. true b. false

Answer 1

It is a false statement i.e. drift velocity is not same in the direction as the applied force.

Drift velocity of a  current-carrying conductor can be explained as, the charges i.e. electrons do not  flow in the same direction of current. In other word, in most cases the movement of the electrons is almost random, with a small net velocity. So that , the drift velocity, in the direction opposite to the electric field.

Drift velocity $v_{d}$ is inversely proportional to the number of electron per unit volume of the conductor e. Therefore, the formulation can be given as ,

$v_{d}$ = σ E/ne

The above equation shows the drift velocity in a current carrying conductor  

where, $v_{d}$ is drift velocity , σ is the conductivity, E is electric force and n is number of electrons per unit volume of the conductor e.

Hence here we can say that, the drift velocity is not in the same direction as the applied force.

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