Potential from a Finite Disk
In this problem, in all cases, you are expected to evaluate any integrals in your answers.
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Starting with the integral expression for the electrostatic
potential due to a ring of charge, find the value of the potential
everywhere along the axis of symmetry.
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Find the electrostatic potential everywhere along the axis of
symmetry due to a finite disk of charge with uniform (surface)
charge density \(\sigma\).
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Find two nonzero terms in a series expansion of your answer to part
(b) for the value of the potential very far away from the disk. [Your final answer should have 2 non-zero terms]