Question

the field lines around one end of a bar magnet are shown below.
based on the diagram, what can you conclude about the pole of the magnet?
○ it is a south pole because the field lines spread out from this end.
○ it is a north pole because the field lines spread out from this end.
○ it is a south pole because the field lines enter the magnet at this end.
○ it is a north pole because the field lines enter the magnet at this end.

Explanation:

To determine the pole, recall magnetic field line rules: Field lines exit the north pole and enter the south pole of a magnet. The diagram shows field lines entering the magnet's end. So this end is a south pole (since field lines enter south poles). Now analyze options:

• First option: Wrong, spread out (exit) is north, not south.
• Second option: Wrong, spread out is north, but lines here enter.
• Third option: Correct, field lines enter, so south pole.
• Fourth option: Wrong, field lines enter south (not north) poles.

Answer:

C. It is a south pole because the field lines enter the magnet at this end.