Question

Two kinds of magnets are shown below.



Jackson wants to hang a small piece of paper on the metal door of his refrigerator. Which type of magnet would be best for Jackson to use, and why?
A.
Magnet 1 would work best because it has a continuous magnetic field.
B.
Magnet 1 would work best because it would attract the refrigerator with more force.
C.
Magnet 2 would work best because it would attract the refrigerator with more force.
D.
Magnet 2 would work best because it has a continuous magnetic field.

Answer 1

C. Magnet 2 would work best because it would attract the refrigerator with more force.

Explanation: Magnet 2 (a U- or horseshoe-style magnet) has its poles close together, concentrating the magnetic field at the contact area and producing a stronger pull on the metal door than a bar magnet whose poles are farther apart.