Deck 11: Magnets and Magnetic Fields

Question 1

The magnetic lines of force shown in the accompanying figure are collectively referred to as ____________________.

Answer 1

magnetic flux

Question 2

The magnetic effects of magnets are concentrated at areas called ____________________.

Answer 2

poles

Question 3

____________________ magnetism is the process of magnetizing a material by placing it near a magnet.

Answer 3

Induced

Question 4

Describe the properties of magnetic flux.

Question 5

If two magnets are brought near each other, like poles will repel and opposite poles will attract.

Question 6

Soft steel is used for the construction of permanent magnets.

Question 7

A very powerful temporary magnet can be made by placing a bar of soft steel inside a coil of wire carrying an electrical current.

Question 8

Magnetic lines of force can be blocked or insulated.

Question 9

Describe two methods for creating a magnet.

Question 10

The small amount of magnetism retained by soft steel is known as ____________________ magnetism and is both desirable and important in the operation of electrical equipment.