5076 ScPhy: Magnetism

Which is not a magnetic material?

• steel

• iron

• nickel

• zinc

Which is an induced magnet?

• an iron rod that is connected to electric current

• a nail that is magnetised when it's brought near to a magnet

• a steel bar that is magnetised by stroking

• a magnet that is repelled by another magnet

In which region is the magnetism of a magnet the strongest?

• near the North pole

• near the South pole

• near both poles

• at the centre of the magnet

Using suitable keywords, briefly describe how an iron bar is magnetised by stroking it with a bar magnet.

What is the magnetic polarity at X? (use right-hand grip rule)

• North

• South

Draw the magnetic field around this bar magnet. Your diagram should accurately represent the relative magnetic field strength.