Magnetism

• The Law of Magnetism

  Poles of a Magnet

  • The ends of a magnet are called poles
  • Magnets have two poles: a north and a south

  
• The Law of Magnetism

  • When two magnets are held close together, there will be an attractive or repulsive force between the magnets depending on how they are arranged:

  
• • The Law of Magnetism states that:
  • Two like poles repel each other
  • Two unlike poles attract each other
  • The attraction or repulsion between two magnetic poles is an example of a non-contact force
  • Attraction and repulsion can be shown by the magnetic field patterns around bar magnets
  • The field lines will look slightly different for each:
• Magnetic field lines for attracting and repelling bar magnets

  
• • Therefore, the magnetic field lines around different configurations of two bar magnets would look like:
  • Magnetic field lines between two bar magnets