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Homework Help: Magnetic fields

  1. Oct 31, 2007 #1
    1. The problem statement, all variables and given/known data
    Determine the force in z-direction on the gyrocenter of a charged particle in a diverging magnetic field.

    [tex]\frac{\partial B}{\partial z} < 0[/tex]

    2. Relevant equations

    3. The attempt at a solution

    Please give me a starter. Could I use the Lorentz force in this case?
  2. jcsd
  3. Nov 4, 2007 #2


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    Staff Emeritus
    Science Advisor

    Is there a discussion in one's text regarding magnetic force or magnetic pressure on a charged particle?

    A short answer - the effective force on a charged particle in a spatially varying magnetic field is given by:


    Hopefully one would be able to derive this relationship.
  4. Nov 4, 2007 #3
    I did it with the Lorentz Force on the guiding center and got the equation given by Astronuc but with a plus sign. I guess that the sign is dependent on the charge.
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