A magnet can hold a piece of paper to the door of a refrigerator. How does the magnet stick without touching the door?

Question

a
The magnetic field of the magnet can act at a distance, and influence the metal of the door through the paper.
b
The magnet induces a magnetic field in the paper.
c
Gravity attracts the magnet to the door.
d
Friction attracts the paper to the magnet.

Answer 1

The correct answer is:

a The magnetic field of the magnet can act at a distance, and influence the metal of the door through the paper.

This means that the magnet's magnetic field interacts with the metal in the door, allowing it to hold the paper in place, even though there is a layer of paper in between.