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    Coefficients of Capacitance

    Ah yes... that "outer" conducting shell in Purcell's treatment serves the role of "ground"; as the source of the charges which are moved to the other conductors (C2 and C2, in the case of State I (following Purcell's diagram)) in order to effect the "charging by induction." Purcell even...
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    Coefficients of Capacitance

    Well yes, sure. But then why won't C21 and C31 in the above equation be equal to zero? How is it that by adding charge to Conductor1, you can induce/create charge on nearby conductors? Surely there's not a "net" increase in charge on Conductors 2 and 3, just b/c charge was added to...
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    Coefficients of Capacitance

    I have a question about coefficients of capacitance.. Specifically I'm reviewing the treatment on the subject in Chap 3.6 in Purcell's classic book on E&M. He starts out by considering a system of four conductors (actually 3 main conductors, and an "infinte" boundary condition surrounding...
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