Methods of Magnetization and Demagnetization
 

Methods of Magnetization and Demagnetization problem 2


How many of the following methods could be used to demagnetise a piece of steel?


  • Heating it until it is red hot

  • Pulling it from a coil that is carrying an alternating current

  • Placing it in an east-west direction and hammering it

  • Putting it in a coil carrying a direct current


  • 1

  • 2

  • 3

  • 4


 

main author and content editor: Odafe Adjeke