8.1 Permanent & Induced Magnets

• What are the two types of magnetic forces discussed?

  Permanent and induced magnetic forces
• What are the two ends of a bar magnet called?

  North Pole and South Pole
• Where are magnetic forces strongest on a magnet?

  At the poles of the magnet
• What happens when two like poles of magnets are brought close together?

  They repel each other
• What occurs when unlike poles of magnets are brought together?

  They attract each other
• What type of forces are the attraction and repulsion between magnetic poles?

  Non-contact forces
• What does a permanent magnet produce?

  Its own magnetic field
• What happens when a permanent magnet is brought close to another permanent magnet?

  They can attract or repel each other
• What is an induced magnet?

  An object that becomes a magnet in a field
• What happens to objects placed in a magnetic field created by a permanent magnet?

  They become induced magnets
• What is the key fact about induced magnetism?

  It always causes a force of attraction
• What happens to induced magnets when the permanent magnet is removed?

  They lose most or all of their magnetism
• What are the key differences between permanent and induced magnets?

  • Permanent magnets produce their own magnetic field.
  • Induced magnets become magnets only in a magnetic field.
  • Induced magnets lose magnetism when the field is removed.
• What are the interactions between magnetic poles?

  • Like poles repel each other.
  • Unlike poles attract each other.
  • Both interactions are non-contact forces.