A circular loop of radius 20 cm carries a current of 10 A. An electron crosses the plane of the loop with a speed of 2.0 × 106 m s–1. The direction of motion makes an angle of 30° with the axis of the circle and passes through its center. Find the magnitude of the passes through its center. Find the magnitude of the magnetic force on the electron at the instant it crosses the plane.

A circular loop of radius 20 cm carries a current of 10 A. An electron crosses the plane of the loop with a speed of 2.0 × 106 m s–1. The direction of motion makes an angle of 30° with the axis of the circle and passes through its center. Find the magnitude of the passes through its center. Find the magnitude of the magnetic force on the electron at the instant it crosses the plane.

Given,

Radius,

Velocity of electron,

direction of motion,

Current in the loop,

Therefore, force,

2