Select True or False for each of the following statements regarding magnetism, a

Question

Select True or False for each of the following statements regarding magnetism, and the earth's magnetic field "B."

1)The earth's B lines are parallel to the earth's surface at all points.

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

3)The magnitude of earth's B is about 1 Tesla.

4) Like magnetic poles attract.

5) The direction of B is indicated by the N pole of a magnetic needle .

6) B does work on a charge only when the charge has a velocity component perpendicular to B.

7) The vector B acts only on charges at rest.

Explanation / Answer

1) False

2) True

3) False ( it is about 25 to 65 micro tesla)

4) False

5) True

6) False

7) False

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