Quiz #3

When the South Poles of two bar magnets are brought closer together, there will be:

• A force of repulsion

• A force of attraction

• An upward force

• No forces

The direction of magnetic field is from:

• south pole to north pole

• north pole to south pole

• inside to outside of the magnet

• front to back

What do magnets sticks to?

• copper

• plastic

• wood

• iron

The force of magnetism is stronger when magnets are _____

• closer together

• round

• cold

• farther apart

The entire region surrounding a magnet is known as the _____

• magnetic field

• magnetic force

• magnetic pole

• magnetized material

Magnets can be demagnetized by the following, EXCEPT:

• hammering

• breaking into half

• exposing to alternating current

• burning or heating

A demagnetized magnet can be magnetized again by exposing it to_____.

• cold place

• alternating current

• heat

• another magnet with a strong magnetic field

Magnetic field lines are drawn based on the pole being considered. Which pole have a field line towards it?

• north

• south

• top

• bottom

Which pole have a field line drawn from it?

• north

• south

• top

• bottom

In right hand rule, the direction of the thumb represents the ______

• magnetic field

• magnetic force

• electric current

• motion of the conductor