A magnet
small magnet used to give direction
A lifting magnet is an electromagnet that is meant to hold or move material that comes in contact with the magnet. This is the opposite of a traction magnet.
a scrap yard magnet is an electro magnet used to pick up bits of metal. this is used because it can drop the metal because it can be turned on and off
The magnet bar is used for stirring solutions.
the ones that attract stuff
An electo-magnet is used in an electric bell.
They are used everyday to move scrap iron around the scrap yard...
no it is not . a temporary magnet is used instead. If you use a permanent magnet, the doorbell will keep on ringing
no it is not . a temporary magnet is used instead. If you use a permanent magnet, the doorbell will keep on ringing
A magnet can be theoretically used in any medium, but strength of the magnet will strongly be influenced by the magnetic permeability of that given medium.
Iron.