Imagine a magnetic field pointing into the plane of this page. An electron moves across the paper from left to right. The direction of the magnetic force on the electron will be
A) into the plane of the paper.
B) out of the plane of the paper.
C) in the plane of the paper and toward the top of the page.
D) in the plane of the paper and toward the bottom of the page.
E) in the plane of the paper and opposite the electron's velocity.

Question

Quizplus · Accepted Answer

Using the right-hand rule for a negative charge, the thumb points in the direction of velocity (left to right), fingers point into the page (magnetic field), and the palm faces the direction of force, which is downward for an electron.

Imagine a Magnetic Field Pointing into the Plane of This