Question

Drift velocity of electrons is due to​

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. ... Due to this drift velocity, there is a net flow of electrons opposite to the direction of the field.

Answer 2

Answer:

Drift velocity of electrons is due to an applied electric field.

Explanation:

• Drift velocity is the average velocity of charged particles in a material under external field.
• It is expressed as:

                      $v_{d}=\frac{I}{neA}$

Here, $v_{d}$ is the drift velocity, n is free electron charge density, e is charge of an electron, A is cross sectional area and I is the current flowing through the material.

• Drift velocity depends on the applied voltage and the molecular structure of the wire.
• Free electrons that moves randomly in a material is drifted under the influence of an external electric field. The velocity with which they drift is called drift velocity.