MHT CET202615 April 2026Morning ShiftPhysicsMagnetic Effects of CurrentActual
Lorentz magnetic force is acting on a particle of charge q moving with velocity V in magnetic field B . The work done by this force on the charged particle is
Options
- Azero
- BV B
- CV V
- Dq( V B )
Correct answer
A. zero
Step-by-step solution
The Lorentz magnetic force on a charged particle is given by F = q( V B ) . The power delivered by this force is P = F V = q( V B ) V . Since the cross product V B is always perpendicular to the velocity vector V , their dot product is zero. Thus, P = 0 . The work done by the magnetic force is W = P dt = 0 . Therefore, the work done by the Lorentz magnetic force on the charged particle is zero. Answer: zero