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Homework Help: Charge in relativity

  1. Apr 10, 2012 #1
    A charge q is placed at a distance d from an innite charged wire carrying lamdba charge per
    unit length.
    (a)What is the force acting on the charge q? (b)Find the force on charge q with respect
    to an observer moving moving at speed u along the wire.
    Last edited: Apr 10, 2012
  2. jcsd
  3. Apr 10, 2012 #2
    E and B fields transform according to the Lorentz Transformation:

    [tex]\mathbf{E}'=\gamma (\mathbf{E}+\mathbf{v}\times \mathbf{B})+(1-\gamma)\frac{\mathbf{E}\cdot \mathbf{v}}{v^2}\mathbf{v}[/tex]

    [tex]\mathbf{B}'=\gamma (\mathbf{B}-\frac{1}{c^2}\mathbf{v}\times \mathbf{E})+(1-\gamma)\frac{\mathbf{B}\cdot \mathbf{v}}{v^2}\mathbf{v}[/tex]
  4. Apr 11, 2012 #3
    In a,there is no relativistic force!
    Last edited: Apr 11, 2012
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