please explain the answer

Question

A uniform magnetic field is in the positive z direction. A positively charged particle is

moving in the positive x direction through the field. The net force on the particle can be made

zero by applying an electric field in what direction?

Answer 1

A uniform magnetic field is in the positive z direction. A positively charged particle is

moving in the positive x direction through the field. The net force on the particle can be made

zero by applying an electric field in what direction?

Hello Dorsa,

The Lorentz force due to magnetic field as per left hand rule will be in the -ve y direction

Force ( -ve y) = qvB

To counter this force Electric field must act in the opposite direction ( +ve y )

This force will be F( +ve y) = qE

and qE = qvB

Hope it works for you !