Notes

• What are the examples of non-contact force?

  Gravitational force

  Magnetic force

  Electrostatic force
• What are the examples of ferro magnetic elements?

  Iron

  Nickel

  Cobalt
• What is the magnetic compound called?

  Steel
• What are the two types of magnetic force when two magnetic are placed close to each other?

  Attraction

  Repulsion
• The force between a magnet and a magnetic material is always?

  Attractive
• What are the characteristics of permanent magnet?

  It produces its own magnetic field

  Always magnetic
• What are the characteristics of induced magnet?

  It becomes magnetic when it is placed in a magnetic field

  It loses most / all of its magnetism quickly when it is removed from the magnetic field
• The force between permanent magnet and induced magnet is always attractive no matter which pole
• Why the Earth has magnetic field?

  Its core contains iron and nickel which are ferro magnetic elements