In the previous problem, assume the electron enters from the bottom of the screen traveling toward the top of the screen. The magnetic field runs into the screen. Which way does the electron curve when it enters the field?
A. To the left of the screen
B. To the right of the screen
C. Into the screen
D. Out of the screen
B
The magnetic force is given by
By the right hand rule, points to the left of the screen. Since the particle is an electron, however, the force points in the opposite direction, toward the right of the screen.
