Question: A particle with charge q moves with velocity v in a magnetic field B. What is the expression for the magnetic force acting on the particle?

Options:

1. F = qvB
2. F = qvB sin(θ)
3. F = qB
4. F = qvB cos(θ)

Correct Answer: F = qvB sin(θ)

Solution:

The magnetic force acting on a charged particle moving in a magnetic field is given by F = qvB sin(θ), where θ is the angle between the velocity vector and the magnetic field vector.