Regarding magnetism!!

Question

this is a stupid true or false..but i keep s******g it up...can someone help!?

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

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

The vector B acts only on charges at rest.

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

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

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

Unlike magnetic poles attract.

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

Answer 1

True. You can see that by this image:

http://hyperphysics.phy-astr.gsu.edu/hba...

False. The B-field only acts on charged particles in motion.

False. Earth's B-field is 5 x 10^-5 T.

True. The North Pole of the compass points in the direction of magnetic South.

False. Only at a place near the equator are the field lines parallel.

True. Unlike charges and poles experience attractive forces.

False. The B component always works as long as the charged particle is not at rest and it does travel parallel to the field direction.