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AP® Physics 1 & 2

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Crossed Electric and Magnetic Fields: Determine Magnitude

APPH12-HZEEZZ

A +5mC particle moves to the right undeflected at 4,000 m/s between two charged plates, where there exists an electric field directed down the page, and also a magnetic field directed into the page.

If the electric field between the plates has a magnitude of 2,000 N/C, how strong is the magnetic field?

A

0.5 T

B

2 T

C

100 T

D

8,000,000 T