A charged particle moves in uniform electric and magnetic fields that are parallel. Its initial velocity has both parallel and perpendicular components. Which statements are correct?
Select all that apply

Question

A charged particle moves in uniform electric and magnetic fields that are parallel. Its initial velocity has both parallel and perpendicular components. Which statements are correct?

G1 Physics · Accepted Answer

E parallel to B accelerates only the parallel component. The magnetic field rotates the unchanged perpendicular component, so radius is constant while pitch changes as v∥ changes.