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Homework Help: Gauss's Law, net electric flux

  1. Sep 22, 2013 #1
    1. The problem statement, all variables and given/known data
    The three small spheres shown in the figure below carry charges q1 = 4.30 nC, q2 = -7.70 nC, and q3 = 3.40 nC.

    Find the net electric flux through each of the following closed surfaces shown in cross section in the figure.


    2. Relevant equations

    3. The attempt at a solution
    Using the above equation, I got the right answers for S1 through S4, but I'm getting the wrong answer for S5:
    [itex]\Phi[/itex]E=[itex]\frac{Q_{encl}}{\epsilon_0}[/itex]= [itex]\frac{4.30-7.70+3.40}{\epsilon_0}[/itex]= [itex]\frac{0}{\epsilon_0}[/itex]=0
  2. jcsd
  3. Sep 22, 2013 #2

    rude man

    User Avatar
    Homework Helper
    Gold Member

    I think your answer is correct.
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