Magnetism And Electromagnestim- Permanent And Induced Magnestim Flashcards

1
Q

At which part of a magnet are the magnetic forces strongest?

A

The poles of the magnet

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2
Q

What happens when two magnets are brought close to each other?

A

They exert a force on each other

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3
Q

What type of force is exerted if two like poles of a magnet are brought near each other?

A

A repulsive, non contact force

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4
Q

What type of force is exerted if two unlike poles of a magnet are brought near each other?

A

An attractive, non contact force

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5
Q

What is the difference between a permanent magnet and an induced magnet?

A

A permanent magnet produces it’s own magnetic field

An induced magnet becomes magnetic when placed in a magnetic field

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6
Q

What type of force does induced magnetism always cause?

A

A force of attraction

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7
Q

What happens when an induced magnet is removed from a magnetic field?

A

The induced magnet loses most/all of its magnetism

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8
Q

What is a magnetic field?

A

The region surrounding a magnet where another magnet or magnetic material experiences a non contact force

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9
Q

Give four examples of magnetic materials

A

Iron
Steel
Cobalt
Nickel

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10
Q

What can always be said about the force between a magnet and a magnetic material?

A

It is always attractive

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11
Q

How does the strength of a magnetic field after as you move further away from the magnet producing it?

A

The magnetic field strength decreases the further you move away

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12
Q

In what direction does a magnetic field point?

A

In the direction that a North Pole would experience a force if placed in the field
From the north seeking pole to the south seeking pole of a magnet

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13
Q

What does a magnetic compass contain?

A

A small bar magnet that points in the direction of the earths magnetic field

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