Methods of Magnetization and Demagnetization
 

Methods of Magnetization and Demagnetization problem 16


Which action will not magnetise a rod?


  • Placing a copper rod inside a coil carrying a direct current

  • Stroking a steel rod with a permanent magnet

  • Hammering a steel rod aligned with the earth’s magnetic field

  • Placing a soft iron rod close to a permanent magnet


 

main author and content editor: Odafe Adjeke