• Version 1
  • A battery and a nail wrapped with magnet wire make a simple electromagnet.



        (use insulated alligator clips)



  • Version 2
  • A long coil and bolt make an easy to use electromagnet.
  • Use the switch to show the effect of the current.




        (set current to 1 A)



  • Version 3
  • The core of this electromagnet has negligible remanence and can be used repeatedly.








        (set current to 2 A)



  • Version 4
  • This heavy steel core and Helmholtz coil make for a visually clear demonstration.




        (set current to 1 A)



  • Version 5
  • Make an electromagnet with a power supply, iron core and 20 turns of test lead cable.




        (set current to 2 A)

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