Which of the following statements for magnetism are true? (Give ALL correct answ

Question

Which of the following statements for magnetism are true? (Give ALL correct answers, i.e., B, AC, BCD...)

A) B does work on a charge only when the charge has a velocity component perpendicular to B.
B) For a bar magnet, the B-lines exit through the N pole and return through the S pole.
C) Like magnetic poles attract.
D) The magnitude of earth's B is about 1E-4 Tesla.
E) The earth's B-lines are parallel to the earth's surface at all points.
F) B does work on a charge only when the charge has a velocity component parallel to B.
G) B acts only on charges at rest.

Explanation / Answer

B) For a bar magnet, the B-lines exit through the N pole and return through the S pole.

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