AP® Physics C: E & M

Free Version

Upgrade subject to access all content

Easy

Direction of Charge Motion

APPHEM-HXR409

A particle of charge $q$ and mass $m$ enters at speed $v$ into a uniform magnetic field of magnitude $B$.

If the particle is moving out of the page and the magnetic field is directed into the page as shown, which of the following correctly describes the path of the particle?

A

In a circle that curves down the page.

B

In a circle that curves up a page.

C

In a clockwise circle in the plane of the page.

D

In a counter-clockwise circle in the plane of the page.

E

In a straight line out of the page.