Answered: Consider a long cylindrical capacitor… | bartleby

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Consider a long cylindrical capacitor (see figure on the
right) wherein the separation distance d between its plates is very
small (ra and ro are just slightly different) such that d << ra.
Show that its capacitance is equivalent to a parallel-plate
capacitor C = ɛ,A/d and explain why this cylindrical capacitor
can be treated as a flat capacitor.

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