Show your work. An electron moves through a region of uniform magnetic field of

Question

Show your work.

An electron moves through a region of uniform magnetic field of magnitude 60 mu T, directed along the positive direction of an x axis. The electron has a velocity (32i + 40j) km/s as it enters the field. (a) What is the radius of the helical path taken by the electron? (b) What is the pitch of the path? (c) To an observer looking into the magnetic field region from the entrance point of the electron, does the electron spiral clockwise or anticlockwise as it moves deeper into the region? (include sketch to justify your answer).

Explanation / Answer

since B is in x direction.
time periodT =2*pi*m/(qB)
and
a)mv/qb
use v=40 m/s
b) pitch=T*32
c)clockwise.

jXi=-k

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