Magnetic Fields and Induced Magnetism

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

• They attract each other.

• They repel each other.

• They have no effect on each other.

• They become demagnetized.

What is an invisible area around a magnet that causes magnetic force?

• A magnetic pole

• A magnetic field

• A magnetic material

• A magnetic current

In which direction do magnetic field lines always travel outside a magnet?

• From South to North

• From East to West

• From North to South

• From West to East

Where is the magnetic field around a magnet strongest?

• Farthest from the magnet

• In the middle of the magnet

• Closer to the poles of the magnet

• It is equally strong everywhere

What can iron filings show about a magnetic field?

• The direction of the field lines

• The temperature of the magnet

• The pattern of the field lines

• The strength of the magnetic force

How can small compasses be used to determine the direction of magnetic field lines?

• They point randomly around the magnet.

• Their arrows point towards the direction of the magnetic field.

• They show the strength of the magnetic field.

• They only work near the Earth's poles.

Which type of magnet always has its magnetism turned on and cannot be turned off?

• An induced magnet

• A temporary magnet

• A permanent magnet

• An electromagnet

What is an induced magnet?

• A magnet that is always magnetic.

• A material that is usually unmagnetized but acts like a magnet when placed in another magnet's field.

• A magnet that can only repel other magnets.

• A magnet that loses its magnetism permanently.

When an iron paper clip is placed in contact with a magnet, what happens to the paper clip?

• It becomes demagnetized.

• It becomes an induced magnet.

• It repels the permanent magnet.

• It changes its material composition.

Is induced magnetism a permanent or temporary process?

• Permanent

• Temporary

• It depends on the material

• It depends on the strength of the permanent magnet