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Electric field strenght of a loop given maximum flux

  1. Sep 16, 2009 #1
    1. The problem statement, all variables and given/known data
    a 29 cm diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. the flux is measured to be 7.2e5 Nm^2/C
    what is the electric field strength in units N/C?


    2. Relevant equations
    flux = EA


    3. The attempt at a solution
    7.2e5 Nm^2/C = E * (.29m/2)^2
    E = 34244946.4923

    apparently it's not the right answer though...

    thanks!
    David
     
  2. jcsd
  3. Sep 16, 2009 #2

    rl.bhat

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    What is the area of the circle?
     
  4. Sep 16, 2009 #3
    the area of a circle is pi*r^2...but this is a loop...or are they the same thing?
     
  5. Sep 16, 2009 #4

    rl.bhat

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    Circular loop and circle is the same.
     
  6. Sep 16, 2009 #5
    awesome! thank you.
     
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