5G20.71  ELECTROMAGNETS




  • Version 1
  • A nail wrapped with magnet wire makes a simple electromagnet.





        (use insulated alligator clips)
        (set current to 2 A)



  • 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
  • A battery replaces the power supply.




        (coil draws ~2 A)

Back