1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Writing the Faraday tensor for a particle in an E field

  1. Apr 26, 2010 #1
    1. The problem statement, all variables and given/known data

    A particle of charge q and mass m is travelling in the lab with velocity v in the x direction when it encounters a constant E-field in the y direction. State the non zero components of the Faraday tensor in the rest frame of the lab.

    3. The attempt at a solution

    I said
    [tex]E=E_{x}i + E_{y}j + E_{z}k[/tex]
    As the field is in the y direction

    Thus I believe the faraday tensot to have 2 non-zero components.
    [tex]F^{02}=-E_{y}[/tex] and [tex]F^{20}=+E_{y}[/tex]

    This does not seem right as the next part of the question asks for the equations of motion for the particle which I get out as a load of 0's.

    Am I missing a magnetic component, and if so, how do I get it?

    Last edited: Apr 26, 2010
  2. jcsd
  3. Apr 26, 2010 #2
    Don't replace Ey with F01 + F10, if that's what your doing.
  4. Apr 26, 2010 #3
    just realised i got the indicies wrong. Now the original post is correct.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook