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Magnet, How to demagnetise a magnet - Coggle Diagram

- - - - The magnetic strength becomes weaker further away from the poles
    - - On other magnets
        
        Repulsion
        
        The like poles of 2 magnets facing each other
        
        Attraction
        
        The unlike poles of 2 magnets facing each other
      - On magnetic materials
        
        Attraction
  - - - North seeking pole
    - - South seeking pole
- - - - Nickel
      - Cobalt
      - Iron
      - Steel
    - - Metal
        
        Aluminium
        
        Zinc
        
        Copper
      - Non-metal
        
        Glass
        
        Wood
- - - - Distance
    - - Size
- - - - Fire alarms
      - electric bells
      - scrap yards
  - - - television or loud speakers
      - A magnetic door
      - Rerfrigerators
      - Compass
- - - - Stroke with same stroking pole all the time
        
        If the permanent magnet strokes the magnetic material back and forth or changing the directions constantly, it will not be magnetised
        
        The more strokes, the stronger the magnet
      - Stroke in one direction
        
        If the stroking pole keeps changing, it will not be magnetised
      - Using 2 permanent magnets to stroke
        
        The stroking pole used in each magnet must be opposite
        
        Stroke the magnetic material in opposite directions
    - - An iron nail is coiled around by electrical wire
        
        Iron nail will become a magnet when electricity is turned on. The magnet is them called an electromagnet
      - Must be connected to an electrical supply such as a battery to work
      - Increasing strength
        
        Coil more coils of wire around the iron nail
        
        Amount of electricity= using battries
      - Is a temporary magnet and once electricity is turned off it loses magnitism and cannot attract magnetic object anymore