Question

9.3.2 quiz: magnetism
question 7 of 10
which statement correctly describes magnetic field lines?
a. they join north pole to south pole.
b. they show the direction a south pole will point.
c. they cross each other at right angles.
d. they always point away from a south pole.

Explanation:

Magnetic field lines are imaginary lines used to represent the magnetic field. They have several properties:

• They form closed loops. Outside the magnet, they go from the north pole to the south pole. Inside the magnet, they go from the south pole to the north pole.
• They show the direction a north pole (not a south pole) will point.
• They do not cross each other. If they did, it would imply two directions of the magnetic field at the same point, which is not possible.
• They point towards a south pole (not away from it).

Answer:

A. They join north pole to south pole.