Question

The drift velocity of the free electron in a conductor is independent of ?
a) length of the conductor
b) cross-seconductorectional area of conductor
c) current d) electric charge​

Answer 1

The drift velocity of the free electron in a conductor is independent of the length of the conductor. (option a)

• Drift velocity: It is defined as the speed or velocity of the electrons drifted in the presence of an electric field.
• There is the contribution of the drift speed to the electric current. They move in the direction of the applied electric field.
• The formula is I = nAvQ, where "n" is the number of electrons, "A" is the area of cross-section, "v" is the drift velocity, "Q" is the charge of an electron, and "I" is the current flowing through the conductor.
• From the formula, we get to know that drift velocity has no relation with the length of the conductor. Therefore, it is independent of the length of the conductor.