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Infinitely charged wire and moving charge

  1. Aug 14, 2016 #1
    1. The problem statement, all variables and given/known data
    There's a uniform infinite line charge with the charge density λ. A point particle with charge q moves with a velocity v parellel to infinite line. What is force exerted on point particle? What is magnetic field seen in ths moving frame(particle frame)?

    2. Relevant equations
    Basic E&M, Maxwell's equations.

    3. The attempt at a solution
    1) What is difference between "stationary wire & moving charge" and "moving wire & stationary charge" ?
    First one will generate electric field and second one will generate magnetic field(current). Am I right?
  2. jcsd
  3. Aug 15, 2016 #2


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    In the frame in which the wire is stationary, the wire will produce only an E field.

    In the particle frame, the moving wire will produce both an E field and a B field.
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