Magnet types

Natural magnet:

• Loadstone also know as Magnetite
• Forms  a permanent magnet
  
  
  

Artificial Magnet:

• Iron, nickel, and cobalt
• Manmade, don’t require current to maintain a magnetic field
• Made of hard brittle alloys
• High residual magnetism
• Require a large magnetic force to become magnetized
• Form a type of magnet
  
  
  

Electromagnets:

• Manmade
• Magnetism depends on current flow
• When current flows through a conductor, a magnetic field is formed around the conductor
• If the conductor is cooled, the magnetic field will be more concentrated
• Wind the coil around a soft iron core, the magnetism will increase
• The magnet will become more powerful, called an electromagnet
• Soft iron is easily magnetized but has low residual magnetism
• Electromagnets are non permanent magnets