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Problem related to electric and magnetic energy densities

  1. Mar 26, 2008 #1
    1. The problem statement, all variables and given/known data

    How can be shown that the electric energy density is completely dominated by the magnetic energy density for non-relativistic plasmas?

    2. Relevant equations

    the electric energy density is given by [tex]{\epsilon_{0}.E^{2}}{}[/tex], and the magnetic energy density is given by [tex]\frac{B^{2}}{2\mu_{0}}[/tex]

    3. The attempt at a solution

    To relate the magnitude of the two fields it should be used one of the Maxwell's eqs, i.e.:
    [tex]\nabla[/tex][tex]\times\vec{E}[/tex] = -[tex]\frac{d\vec{B}}{dt}[/tex]

    But this is all I can do so far...:confused:
    Please , help me with a hint how to use the given ..

    Thank you in advance
     
  2. jcsd
  3. Mar 27, 2008 #2
  4. Mar 28, 2008 #3
    thank you :)

    Thank you for the help :)

    Kisses,
    Elisa
     
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