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AP® Physics C: E & M

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Circling Magnetic Field

APPHEM-ZDA2K6

The diagram shows a region of space containing magnetic field. The magnetic field is represented by the arrows shown in the diagram, where each arrow shows the strength (according to the arrow's length) and direction of the magnetic field at the point from which the arrow emerges.

Which of the following could explain what is happening in this region of space? Select four answers.

A

Positive charges are moving into the page.

B

Positive charges are moving out of the page.

C

Negative charges are moving into the page.

D

Negative charges are moving out of the page.

E

An electric field directed into the page is increasing with time.

F

An electric field directed out of the page is increasing with time.

G

An electric field directed into the page is decreasing with time.

H

An electric field directed out of the page is decreasing with time.