While researching magnetic fields, Marisa finds several online sites that describe a fictitious north monopole that is a magnet with only a north pole. Although it does not exist, the north monopole is used to describe magnetic field lines.
Answer
A
The field lines around a magnet point from the south pole to the north pole to show the direction opposite to the magnetic force on the monopole.
B
The field lines around a magnet point from the south pole to the north pole to show the direction of the magnetic force on the monopole.
C
The field lines around a magnet point from the north pole to the south pole to show the direction opposite to the magnetic force on the monopole.
D
The field lines around a magnet point from the north pole to the south pole to show the direction of the magnetic force on the monopole.
Explanation
Magnetic field direction is defined as the direction of the force on a hypothetical north pole. Outside a magnet, field lines point from the magnet’s north pole to its south pole, so they show the direction of the magnetic force on the fictitious north monopole. Therefore, choice D is correct.
AI-written and checked against the verified answer.