When you squash a spring down with your hand, you feel:
An upward push on your hand
A downward push on your hand
No push or pull at all
None of these
How can an electromagnet be made stronger?
Add an iron core.
Increase the voltage.
Add more coils of wire.
All of these
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
If I bring a North and South Pole together which word or phrase best describes what happens?
Attraction
Reaction
Repulsion
Brownian motion
In which direction do the field lines go around a magnet?
From south to north
It's different for every magnet
Clockwise
From north to south
Which pole of a magnet in a compass points north?
Neutral pole
South Pole
North Pole
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.
The more you squash or compress a spring down with your hand:
The bigger the downward force on your hand
The smaller the upward force on your hand
The bigger the upward force on your hand
If you hang a magnet so it is free to swing and turn, what have you created?
Flux capacitor
Compass
Watch
Nothing
Which two metals will be attracted by a magnet?
Iron and steel
Gold and silver
Aluminium and lead
