when a charged particles moves perpenidular to magnetic.field.its kinetic energy?

Question

electricity

Answer 1

What is your question?

When a charged particle moves perpendicular to a magnetic field, a force is exerted on the particle. This, force, however, does no work on the particle, it merely changes the direction of the particle’s velocity (accelerates it), it does not increase the magnitude of its velocity (speed).
Its KE value stays constant even though it is constantly accelerating,
KE = 1/2 mv^2.
The direction of its velocity changes but its magnitude is constant.

If you have a wire with an electric current running through it and placed this wire in a magnetic field, the moving charged particles (the electrons) will experience a magnetic force as the move through the wire and the wire will experience a net force. This is actually not a difficult experiment to perform if one had a decent current source and a strong magnet.

Answer 2

K.E.=HALF X MASS XSQUARE OF VELOCITY
it does not depend upon direction or magnetic field