Magnetism

Magnetic field lines

• Always run from S to N

• Always run from N to S

• Can run either N to S or S to N

• Can run both N to S and S to N

When magnetic field lines are closer together, this means

• You are closer to the N end

• You are closer to the S end

• There is a stronger magnetic field present

• You have added too much iron filings

The magnetic field is the strongest

• At the poles

• In the middle

• At the N end

• At the S end

If you cut a magnet in half, you will end up with

• One magnet with two N poles and one magnet with two S poles

• Two magnets both having one N and one S pole

• Two pieces that don't behave as magnets any more

• You can't cut a magnet in half

When drawing magnetic fields, the lines always run

• From the stronger magnet to the weaker magnet

• From left to right

• From the S to N pole

• From the N to S pole

When drawing magnetic fields, the lines

• Get thicker as the field gets stronger

• Don't always end up at a pole

• Don't show the shape of the magnet

• Never cross each other

Which of the following is true?

• Like poles ATTRACT

• Opposite poles ATTRACT

• Like poles have no field lines

• Opposite poles have no field lines

The field lines in the picture represent

• One bar magnet- showing N and S poles

• One bar magnet- showing S and N poles

• Two bar magnets- showing N and S poles

• Two bar magnets- showing N and N poles