Question

A Steady current flows in a metalic conductor of non uniform cross section. The quantity/quantities which remain constant along the length of the conductor is/are
A. current electric field ad drift speed
B. drift speed only
C. current and drift speed
D. current only

Answer 1

Correct Answer - D
`i=n eAv_(d)`
Therefore for non-uniform cross-section (different value of A) drift speed will be different at different sections. Only current (or rate of flow of charge) will be same.