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Homework Help: Electrostatic Potential in Dielectric Medium

  1. Oct 18, 2014 #1
    1. The problem statement, all variables and given/known data
    I need to find the green function for a dielectric sphere ([itex]\epsilon_1[/itex]) inside another dielectric medium ([itex]\epsilon_2[/itex]) using the method of images.

    2. Relevant equations
    In gaussian units I have: [tex]\phi=\frac{q}{\epsilon|r-r1|}[/tex]

    3. The attempt at a solution
    Due to the symmetry of the problem, the image charge would be located in the axis between the charge and the sphere's center. I don't know what would the boundary conditions be.
  2. jcsd
  3. Oct 20, 2014 #2


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    Staff Emeritus
    Science Advisor

    Here's a web page that explains the boundary conditions across a dielectric:
    http://www.ittc.ku.edu/~jstiles/220/handouts/Dielectric Boundary Conditions.pdf
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