Potential of Line ChargeThe potential of a line of charge can be found by superposing the point charge potentials of infinitesmal charge elements. It is an example of a continuous charge distribution.

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Potential for Ring of ChargeThe potential of a ring of charge can be found by superposing the point charge potentials of infinitesmal charge elements. It is an example of a continuous charge distribution. The ring potential can then be used as a charge element to calculate the potential of a charged disc.
In this form it could be used as a charge element for the determining of the potential of a disc of charge.

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Potential for Disc of ChargeThe potential of a disc of charge can be found by superposing the point charge potentials of infinitesmal charge elements. It is an example of a continuous charge distribution. The evaluation of the potential can be facilitated by summing the potentials of charged rings. The integral over the charged disc takes the form:

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