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Homework Help: What i need to do in this situation

  1. Feb 1, 2007 #1
    I unploaded a picture describing this situation

    i dont know how to find the Potential difference in this situation
    because there is two different objects. a charge and a plane.
    on the plane we calculate the Potential difference
    E*d=v1-v2
    on the charge each potential calculates in V=Q/4pi*e0*r

    to different things

    please help !


    problem description
    there is an infinite plane whos charge densety is G

    on a distance D we put a positve charge +Q

    between this charge and the plane there is two point

    A and B
    point A is distant from the charge in X

    point b is distant from the charge in 0.5X

    how do i find the Potential difference
    between these point?
     

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    Last edited: Feb 1, 2007
  2. jcsd
  3. Feb 3, 2007 #2

    Tom Mattson

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    Staff Emeritus
    Science Advisor
    Gold Member

    Yes, they're two different things. However, electric potentials obey the property of linear superposition. That means that you can find the potential difference between A and B due to the plane only, and then due to the point charge only, and then add the results.
     
  4. Feb 3, 2007 #3
    thank you very much

    :smile: :smile: :smile: :smile: :smile: :smile:
     
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