A magnet can exert a force on another nearby magnet. Magnets have two poles:
The magnetic force is strongest near the magnet's poles.
Two magnets will either attract or repel each other in the following way:
Magnetic forces are non-contact forces – this means that magnets affect each other without touching.
Iron, steel, nickel and cobalt are magnetic materials. They are affected by magnets and are attracted to either pole of a magnet.
A permanent magnet is often made from a magnetic material such as iron. A permanent magnet always causes a force on other magnets, or on magnetic materials. Key features of a permanent magnet:
Bar magnets and horseshoe magnets are examples of permanent magnets.
Unlike a permanent magnet, an induced magnet only becomes a magnet when it is placed in a magnetic field. The induced magnetism is quickly lost when the magnet is removed from the magnetic field.
Like all induced magnets: