A charged particle moves in a region where a constant magnetic
field exists. If the particle has velocity components parallel and
perpendicular to the magnetic field vector, it follows a helical
path. The distance between the successive circular paths in its
helical path is called pitch. Which one or ones are correct about
the pitch of the helical path of the charged particle?
I) If the component of its velocity perpendicular to the
magnetic field increases, the pitch decreases.
II) If the component of its velocity parallel to the magnetic
field increases, the pitch increases.
III) If the magnitude of the magnetic field increases, the pitch
increases.
A)
II
B)
I
C)
III
D)
I and II
E)
II and III