An electron is projected along the axis of a circular conductor carrying some current. Electron will experience force

Options

A. a force along the axis.
B. a force perpendicular to the axis
C. a force at an angle of `45^(@)` with the axis
D. no force

Answer

D

Explanation

The magnetic field (B) produced by a carrent carrying circular conductor is perpendicular to its plane and is directed along the axis of the cylinder. When the electron is projected with a velocity (v) along the axis, both B and v will be parallel to each other. The force acting on the electron will be zero. `[F=evBsin 0=0]`