The drift speed of charge carriers in a conductor , connected between the terminals of battery is `v_(d)` when it carries a current I , If the length of the conductor is reduced by half , then the drift speed of the charge carriers

Options

A. is doubled
B. remains same
C. is reduced by half
D. decreases `sqrt(2)` times

Answer

A

Explanation

As , we know that
current , `I = ("ne"^(2)tau v_(d))/(ml) rArr I prop 1/l `
Hence , drift speed of charge carriers is doubled . (1)