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Homework Help: Flux through a surface

  1. Feb 7, 2008 #1
    [SOLVED] Flux through a surface

    1. The problem statement, all variables and given/known data
    The square surface shown in Figure 24-26 measures 3.8 mm on each side. It is immersed in a uniform electric field with magnitude |E| = 2000 N/C. The field lines make an angle of 35° with a normal to the surface, as shown. Take that normal to be directed "outward," as though the surface were one face of a box. Calculate the electric flux through the surface.


    A=(0.0038m)^2=1.444*10^-5 m^2

    2. Relevant equations

    3. The attempt at a solution
    flux=2000N/C * (1.444*10^-5 m^2) cos145 = -0.023657 N*m^2/C
    Last edited by a moderator: Apr 23, 2017
  2. jcsd
  3. Feb 7, 2008 #2


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    Homework Helper
    Gold Member

    Your answer is correct, and your work looks sound. Do you have any other questions?
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