Question 1

If a permanent magnet is cut into pieces, each piece a separate magnet.

Accepted Answer

A)   is not
B)   isC) A) and B)
D) undefined

Question 2

The amount of magnetism left in a material after the magnetizing force has stopped is called .

Accepted Answer

A)   permeability
B)   reluctance
C)   saturation
D)   residual magnetismE) None of the above
F) A) and D)

Question 3

In the English system, the total force producing a magnetic field is the .

Accepted Answer

A)   magnetomotive force
B)   reluctance
C)   permeability
D)   flux densityE) A) and B)
F) A) and C)

Question 4

The north pole of a compass needle points in the direction of the south geographic pole.

Accepted Answer

A) True 
 B)False

Question 5

Earth contains magnetic poles.

Accepted Answer

A) True 
 B)False  True

Question 6

The three substances that form natural magnets are .

Accepted Answer

A)   iron, boron, and cobalt
B)   copper, iron, and cobalt
C)   copper, nickel, and boron
D)   iron, nickel, and cobaltE) B) and C)
F) None of the above

Question 7

Of the three basic classifications of magnetic materials, materials are either metal or nonmetal materials that cannot be magnetized.

Accepted Answer

The answer of Of the three basic classifications of magnetic...

Question 8

Lodestone is a name for a naturally occurring magnetic material that is also called .

Accepted Answer

A)   lead
B)   magnetism
C)   copper
D)   magnetiteE) None of the above
F) A) and D) D

Question 9

What type of magnet depends on flowing current to produce a magnetic field?

Accepted Answer

A)   electromagnet
B)   permanent magnet
C)   temporary magnet
D)   domain magnetE) B) and C)
F) A) and D)

Question 10

What type of magnets do not require any power or force to maintain their field?

Accepted Answer

A)   electromagnets
B)   permanent magnets
C)   temporary magnets
D)   domain magnetsE) B) and C)
F) A) and D)

Question 11

When a magnetic material's molecules are all lined up, and increases in current flow no longer cause increases in magnetic field strength, the material has reached .

Accepted Answer

A)   permeability
B)   reluctance
C)   saturation
D)   residual magnetismE) A) and B)
F) A) and D)

Question 12

The regions formed in the molecular structure of magnetic metals are sometimes called magnetic .

Accepted Answer

A)   quarks
B)   spins
C)   domains
D)   atomsE) A) and B)
F) A) and C)

Question 13

Of the three basic classifications of magnetic materials, materials are metals that are most easily magnetized.

Accepted Answer

The answer of Of the three basic classifications of magnetic...

Question 14

Man-made permanent magnets retain their magnetism than natural magnets.

Accepted Answer

A)   less
B)   longerC) A) and B)
D) undefined

Question 15

A basic law of magnetism states that unlike poles and like poles .

Accepted Answer

A)   attract; repel
B)   repel; attractC) A) and B)
D) undefined A

Question 16

The measure of a material's resistance to magnetism is known as .

Accepted Answer

A)   permeability
B)   reluctance
C)   saturation
D)   residual magnetismE) C) and D)
F) None of the above

Question 17

Magnetic lines of force are referred to as .

Accepted Answer

A)   flux
B)   spin
C)   reluctance
D)   bandsE) A) and B)
F) A) and C)

Question 18

The strength of an electromagnet is primarily proportional to its .

Accepted Answer

A)   length
B)   ampere-turns
C)   diameter
D)   core resistanceE) None of the above
F) C) and D)

Question 19

To locate the north pole of an electromagnet, use the hand rule.

Accepted Answer

A)   left
B)   rightC) A) and B)
D) undefined

Question 20

Magnetism can be explained in terms of spin patterns.

Accepted Answer

A)   electron
B)   neutron
C)   proton
D)   quarkE) C) and D)
F) A) and B)

Exam 4: Magnetism

If a permanent magnet is cut into pieces, each piece a separate magnet.

Correct AnswerverifiedShow Answer

The amount of magnetism left in a material after the magnetizing force has stopped is called .

Correct AnswerverifiedShow Answer

In the English system, the total force producing a magnetic field is the .

Correct AnswerverifiedShow Answer

The north pole of a compass needle points in the direction of the south geographic pole.

Correct AnswerverifiedShow Answer

Earth contains magnetic poles.

Correct AnswerverifiedTrue

The three substances that form natural magnets are .

Correct AnswerverifiedShow Answer

Of the three basic classifications of magnetic materials, materials are either metal or nonmetal materials that cannot be magnetized.

Correct AnswerverifiedShow Answer

Lodestone is a name for a naturally occurring magnetic material that is also called .

Correct AnswerverifiedD

What type of magnet depends on flowing current to produce a magnetic field?

Correct AnswerverifiedShow Answer

What type of magnets do not require any power or force to maintain their field?

Correct AnswerverifiedShow Answer

When a magnetic material's molecules are all lined up, and increases in current flow no longer cause increases in magnetic field strength, the material has reached .

Correct AnswerverifiedShow Answer

The regions formed in the molecular structure of magnetic metals are sometimes called magnetic .

Correct AnswerverifiedShow Answer

Of the three basic classifications of magnetic materials, materials are metals that are most easily magnetized.

Correct AnswerverifiedShow Answer

Man-made permanent magnets retain their magnetism than natural magnets.

Correct AnswerverifiedShow Answer

A basic law of magnetism states that unlike poles and like poles .

Correct AnswerverifiedA

The measure of a material's resistance to magnetism is known as .

Correct AnswerverifiedShow Answer

Magnetic lines of force are referred to as .

Correct AnswerverifiedShow Answer

The strength of an electromagnet is primarily proportional to its .

Correct AnswerverifiedShow Answer

To locate the north pole of an electromagnet, use the hand rule.

Correct AnswerverifiedShow Answer

Magnetism can be explained in terms of spin patterns.

Correct AnswerverifiedShow Answer

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True

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D

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A

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