When two magnets repel each other, they:
Push away from each other
Pull towards each other
Neither push nor pull
None of these
What advantage does an electromagnet have over a permanent magnet?
A permanent magnet cannot be used to pick up nickel.
An electromagnet can be used for picking up more metals.
An electromagnet can be switched off.
An electromagnet is lighter.
Which two metals will be attracted by a magnet?
Iron and steel
Gold and silver
Aluminium and lead
When two magnets attract each other, they:
Where are the field lines most concentrated around a bar magnet?
At the centre
At both poles
At the South Pole
At the North Pole
Which of these devices uses a magnet or electromagnet to make it work?
All of these devices use a magnet or electromagnet.
A compact disc
A microchip
An electric bell
Which of these objects would be attracted to a magnet?
A leather purse
A steel key
A wooden ruler
Charcoal
Magnetism is a type of:
Electricity
Gravity
Force
Which pole of a magnet in a compass points north?
Neutral pole
South Pole
North Pole
How can an electromagnet be made stronger?
Add an iron core.
Increase the voltage.
Add more coils of wire.
All of these
