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Magnetic Fields
BlackBoard Notes

 

  • Observe the B field around permanent magnets, and current-carrying wires and coils.

     

     

  • Which end of the compass seeks North?

    Which way is up?

  • B around a bar magnet:

    Bar Magnet

  • B around a straight wire:

     
    Straight Wire

  • B around a wire coil:

    Coil

     

  • Units:

    BIl

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    © St. Lawrence University Department of Physics
    Revised: 16 Feb 04 Canton, NY 13617