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Consider a thin flat insulating disk of radius R with a hole in the center of...

Consider a thin flat insulating disk of radius R with a hole in the center of radius R/2. If this thin annular disk has uniform surface charge density σ, what is the electric potential at a distance x from the center of the hole along the central axis?

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Solution → Confidle an element as a then ring radius r and thick neis de Area cel element = aardr So charge = dq = gurdro ele

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