Methods of Magnetization and Demagnetization
 

Methods of Magnetization and Demagnetization problem 17


A steel magnet is placed inside a coil of wire. Which method is used to demagnetise the magnet?


  • Connect the coil to an a.c power supply

  • Connect the coil to a d.c power supply

  • Connect the coil to an a.c power supply and slowly remove the magnet from the coil.

  • Connect the coil to a d.c power supply and slowly remove the magnet from the coil


 

main author and content editor: Odafe Adjeke