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Electromagnetism - Conducting Spheres and their potential

  1. Feb 5, 2007 #1
    1. The problem statement, all variables and given/known data

    Two hollow concentric conducting spheres hold charges Q[1] and Q[2] as shown in the attachment.

    Find the potential of each sphere, and the potential difference.

    2. Relevant equations

    Potential difference V = Phi[2] - Phi[1]

    3. The attempt at a solution

    I'm having some trouble with the actual question; what does it mean, the potential of each sphere? Does this mean the potential of the sphere at a distance r where r is greater than the radius? In this case I think the answer would be

    Phi[1] = Q[1]/(4*Pi*Epsilon*r)

    and

    Phi[2] = Q[2]/(4*Pi*Epsilon*r)

    I don't think this is quite correct however. Does it mean the potential *on* each sphere instead? In this case, wouldn't the potential on the inner sphere due to the bigger sphere be zero?

    I'm quite confused here and any help would be appreciated!
     

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  2. jcsd
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