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

Explanation / Answer

Answer ie EG

A) False ,Think about north and south poles .The magnetic field need to enter and exit the earth some where/

B)False ,the magnitude of earth's magnetic field is 1*10-4 T

c)False ,! Since F=V*B, this is partially true. However, this isn

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