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The electric potential of 2 hollow concentric spherical shells

  1. Jan 26, 2010 #1
    1. The problem statement, all variables and given/known data
    Consider two concentric conductive hollow spherical shells. The inner shell has radius R1 and holds the charge +q. The outer shell has charge R2 and holds charge -q. Determine an expression for the potential difference between the shells.


    2. Relevant equations

    V = q / (4 pi ε0 r) when r greater or equal to the radius of the shell

    V = q / (4 pi ε0 R) when r is less than the radius (R) of the shell

    3. The attempt at a solution

    I said due to fact that electric potential has superposition principle. The total electric potential between the shells:
    therefore: V = q / (4 pi ε0) (1/r - 1/R2)
    I am unsure if this is true or not any help would be appreciated, Thanks
     
  2. jcsd
  3. Jan 26, 2010 #2

    ideasrule

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    Homework Helper

    Yup, looks right to me.
     
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