AnswersTX-Physics CRLab: Circuit Design

Magnets and Magnetism Answers

0 verified answers
1
Free Preview

Which actions most likely cause the domains within a material to lose their alignment and become more randomized? Check all that apply.

A
heating the material
B
rubbing the material against a magnet
C
passing electricity around the material
D
placing the material in a magnetic field of opposite polarity
E
placing the material near a strong magnet
F
hitting the material
2
Free Preview

Which is the best procedure to make a permanent magnet?

A
placing a magnetically hard material in a weak magnetic field
B
placing a magnetically hard material in a strong magnetic field
C
placing a magnetically soft material in a weak magnetic field
D
placing a magnetically soft material in a strong magnetic field
3

The presence of which magnetic feature best explains why a magnet can act at a distance on other magnets or on objects containing certain metals?

A
fields
B
dipoles
C
domains
D
forces
4

Steel objects can become temporary magnets because they are mainly composed of which element?

A
carbon
B
iron
C
nickel
D
cobalt
5

The north pole of a strong magnet is dragged down an iron nail from the top to the point 50 times.

A
The nail will not pick up any paper clips because its domains are not aligned.
B
The nail will not pick up any paper clips because its domains have been aligned.
C
The nail will pick up some paper clips because its domains are not aligned.
D
The nail will pick up some paper clips because its domains have been aligned.
6

Which statement describes the magnetic field inside a bar magnet?

A
It points from north to south.
B
It points from south to north.
C
It forms loops inside the magnet.
D
There is no field within the magnet.
8

The diagram shows two bar magnets. They are cut along the dashed line, and then the two marked ends are placed near each other.

Question illustration
A
The pieces will repel because the cut end of the top magnet is not a magnetic pole.
B
The pieces will attract because the cut end of the top magnet is not a magnetic pole.
C
The pieces will repel because the cut end of the top magnet is a south pole.
D
The pieces will attract because the cut end of the top magnet is a north pole.
9

A magnetically soft material is placed in a strong magnetic field.

A
It will become a permanent magnet because the domains will remain aligned.
B
It will become a temporary magnet because the domains will remain aligned.
C
It will become a permanent magnet because the domains will easily realign.
D
It will become a temporary magnet because the domains will easily realign.
10

Two bar magnets are labeled A and B. The ends of each magnet are numbered 1 or 2, but the poles are not labeled. When A1 is brought near B1, the bars repel.

A
A1 is the north pole of a magnet, and B1 is the south pole of a magnet.
B
A1 is the north pole of a magnet, and B1 is the north pole of a magnet.
C
A1 and B1 are opposite poles, but there is not enough information to tell which ones.
D
A1 and B1 are like poles, but there is not enough information to tell whether they are north poles or south poles.

Did you find these answers helpful?

More from this Course

Quiz
10 verified answers

Magnetic Field and Force

Quiz
10 verified answers

Electromagnetic Induction

Quiz
9 verified answers

Applications of Electromagnetic Induction