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Putting a Compass in a Magnetic Field

  1. Mar 13, 2013 #1
    1. The problem statement, all variables and given/known data
    If you put a compass in a magnetic field, the compass will...
    a) seek electrical charge concentrations.
    b) line up in a direction perpendicular to the magnetic field lines.
    c) swing randomly.
    d) line up in a direction parallel to the magnetic field lines.

    Which one is it? Why?

    EDIT: I found it to be d.
     
  2. jcsd
  3. Mar 13, 2013 #2

    tiny-tim

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    hi joel! :smile:
    ok, but why? :wink:

    (what are compasses made of?)
     
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