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Purcell´s magnetism problem.

  1. May 13, 2013 #1
    1. The problem statement, all variables and given/known data

    The figure shows the path of a positive ion moving in the xy plane. There is a uniform magnetic field of 6000 gauss in the z direction. Each period of the ion's cycloidal motion is completed in 1 microsecond. What is the magnitude and the direction of the electric field that must be present? Hint: Think about a frame in which the electric field is zero.

    2. Relevant equations



    3. The attempt at a solution



    I'll appreciate any help.
    Thanks!
     

    Attached Files:

  2. jcsd
  3. May 13, 2013 #2

    tiny-tim

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    Welcome to PF!

    Hi -Newton-! Welcome to PF! :smile:
    ok, right forum … now fill in part 2 :wink:
     
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