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Net electric flux

  1. Feb 9, 2009 #1
    1. The problem statement, all variables and given/known data

    This is the question.
    Charges q1= -6Q and q2 = +2Q are located at x =-a and x = +a, respectively.

    2. Relevant equations
    Part A
    What is the net electric flux through a sphere of radius 2a centered at the origin?
    Part B
    What is the net electric flux through a sphere of radius 2a centered at x=2a?

    NEED help with part B

    3. The attempt at a solution

    For part A
    i did [tex]\Phi[/tex] = (-6Q+2Q)/E ; so = -4Q/E
     
    Last edited: Feb 9, 2009
  2. jcsd
  3. Feb 9, 2009 #2

    gabbagabbahey

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    Draw a 2D sketch of the sphere in part B....which charge(s) does it enclose?
     
  4. Feb 9, 2009 #3
    i have got the answer
    thanks anyway,, for part B
    i got +2Q/E0
     
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