Author Question: An electron follows a circular path (radius = 15 cm) in a uniform magnetic field (magnitude = 3.0 ... (Read 243 times)

WWatsford · **on:** Jul 28, 2018

An electron follows a circular path (radius = 15 cm) in a uniform magnetic field (magnitude = 3.0 G). What is the period of this motion?
a. 0.12 ms
b. 1.2 ms
c. 0.18 ms
d. 1.8 ms
e. 1.8 ms

Question 2

An electron moves in a region where the magnetic field is uniform, has a magnitude of 60 mT, and points in the positive x direction. At t = 0 the electron has a velocity that has an x component of 30 km/s, a y component of 40 km/s, and a z component of zero. What is the radius of the resulting helical path?
a. 4.7 mm
b. 18 mm
c. 3.8 mm
d. 2.8 mm
e. 5.7 mm