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Electric flux through the square

  1. Sep 20, 2015 #1
    1. The problem statement, all variables and given/known data
    A point charge of +6μC is placed at a distance 20 cm directly above the center of a square of side 40cm.The magnitude of the flux through the square is

    2. Relevant equations

    image030.gif
    3. The attempt at a solution
    cu.png
    Now how to enclose the charge completely?The answer is with the help of 5 more squares but I want to know how?Because this will make a cube
    cc.png
    The charge is not enclosed completely.
     
  2. jcsd
  3. Sep 20, 2015 #2

    ehild

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    Think in 3D.

    fluxsquare.JPG
     
  4. Sep 20, 2015 #3
    Understood.Thanks @ehild.
     
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