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Homework Help: Electric Potential of an insulating washer

  1. Jun 9, 2004 #1
    Hi, I have find an expression for the Electric Potential of a uniformly charged insulating washer of innner radius a and outer radius b at a point P located a distance z from the washer along the symmetry axis perpendicular to the washer.

    I have come up wiht the idea that this problem might be best solved by substracting the Electric Potential (Va) for a disk of radius a from the Electric Potential (Vb) for a disk of radius b.

    Or do you see another method?

    thank you for your help,

  2. jcsd
  3. Jun 9, 2004 #2


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    Homework Helper

    Your method looks good to me.
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