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electric potential of disk with uniform surface charge

Please see the attachment for full problem statement.

A disk with radius R has uniform surface charge density.

By regarding the disk as a series of thin concentric rings, calculate the electric potential V at a point on the disk's axis a distance x from the center of the disk. Assume that the potential is zero at infinity. (Hint: Use the result that potential at a point on the ring axis at a distance x from the center of the ring is where Q is the charge of the ring).

Calculate.

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The solution shows how to calculate the electric potential V at a point on the disk's axis a distance x from the center of the disk, which has uniform surface charge density. The solution is detailed and well presented. See attachment for full details.

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