AP EAMCET202119 Aug 2021Morning ShiftPhysicsMagnetic Effects of CurrentActual
In which of the following case no force exerted by a magnetic field on a charge?
Options
- AMoving with constant velocity
- BMoving in a circle
- CAt rest
- DMoving along a curved path
Correct answer
C. At rest
Step-by-step solution
Lorentz force or magnetic force is, F → = q v → × B → From the above expression, it is clear that the magnetic field acts perpendicular to the instantaneous direction of charge, if there is no velocity component of the charge or charge is at rest then the magnetic field cannot exert any force on the charge particle.