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Electric field at (x,y) from uniformly charged rod.

  1. Feb 5, 2016 #1
    1. The problem statement, all variables and given/known data
    A thin rod carries a charge Q distributed uniformly over its length L , and is situated on the x axis between x=±L/2. Find the electric field at an arbitrary point (x, y). (You will have to do separate integrals for the x and y components.)

    2. Relevant equations
    ∫dE=∫kdq/r2

    3. The attempt at a solution
    cm5lb9q.png
    mk3g2IV.png

    Mastering Physics is telling me that the answer does not depend on k, lambda or a, which are variables I defined.

    I have another method of attempting the question which results in a nasty integration, it's basically Mastering Physics being very ambiguous in what I am allowed to define. As seen here:

    vTWYyvn.png
     
  2. jcsd
  3. Feb 5, 2016 #2

    BvU

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    Gold Member

    Hello MW, :welcome:

    A few questions to begin with: how would the program be able to understand how you defined ##a## and ##\lambda## ? Shouldn't you use ##y## and ##Q/L## instead ?

    And I don't understand how you can redefine x in an x, y coordinate system ?

    How does it do that ? Or is that a different program ?

    Is your handwriting meant to be read by others than yourself ? I find it difficult ...
     
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