Question

Explain Drift velocity.

Answer 1

Answer:

In physics a drift velocity is the average velocity attained by charged particles, such as electrons, in a material due to an electric field. In general, an electron in a conductor will propagate randomly at the Fermi velocity, resulting in an average velocity of zero. Applying an electric field adds to this random motion a small net flow in one direction; this is the drift.

Answer 2

Explanation:

Drift Velocity :

Drift velocity define as the average velocity with which the free electron move toward the positive end of conductor under the influence of an external electric field across the conductor.

V(d) = - e E T(avg) / m

Drift velocity in form of potential :

V(d) = eV T(avg) / m l

Where :

V is the potential ......

T(avg) is the average relaxation time between two successive collision .

m is the mass of electron .......

l is the length of conductor........

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