Question

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

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

Answer 1

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

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

The earth's B lines are parallel to the earth's surface at all points.FALSE \

B does work on a charge only when the charge has a velocity component parallel to B.FALSE

The vector B acts only on charges at rest.FALSE

Like magnetic poles attract.FALSE

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