Magnetism and Electric Forces Quiz

What is a magnetic field?

• is the direction and strength of magnetic forces in a region around a magnet.

• is the direction of magnetic forces that are far from the magnet

• is the direction but not the strength of magnetic forces around a magnet

• is the strngth and not the direction of magnetic forces around a magnet

Where on a magnet is the force of attraction the strongest?

• the poles of a magnet

• the center of a magnet

• the top of a magnet

• the bottom of a magnet

How do the poles of North and South magnets interact?

• attract each other

• repel each other

How do the poles of North and North magnets interact?

• repel each other

• attract each other

How do the poles of South and South magnets interact?

• repel each other

• attract each other

Which of the following ways would not increase the attractive force between two permanent magnets?

• use a magnetic circuit

• align the poles correctly

• reduce the gap

• Use stronger magnets

• Heat the magnet

Which of the following ways would not decrease the attractive force between two permanent magnets?

• insert a non-magnetic barrier

• misalign the poles

• Increase the gap

• Use a magnetic circuit

• heat the magnets

What materials can be magnetized?

• iron

• nickel

• cobalt

• some alloys

• plastic

How can you make a temporary magnet using just a nail and a permanent magnet?

What is the magnetic domain?

• is a region in a magnetic material in which the magnetic fields of the atoms all point in the same direction, making a single field around the domain

• is a region in an electric current in which all the atoms point in different directions

• is a region in a magnetic material in which the magnetic fields of the atoms all point in different directions, making a multiple fields around the domain