VITEEE 2021 Solved Paper

The magnetic force on a moving charge is given as

→

F

=q

→

v

×

→

B

.
The implications of this expression include:
1. The force is perpendicular to both the velocity v of the charge q and the magnetic field B.
2. The magnitude of the force is F=qvB‌sin‌θ where θ is the angle <180 degrees between the velocity and the magnetic field. This implies that the magnetic force on a stationary charge or a charge moving parallel to the magnetic field is zero.