Solved: A sheet of gold foil (negligible thickness) is
Chapter 20, Problem 20.186(choose chapter or problem)
A sheet of gold foil (negligible thickness) is placed between the plates of a capacitor and has the same area as each of the plates. The foil is parallel to the plates, at a position one-third of the way from one to the other. Before the foil is inserted, the capacitance is C0. What is the capacitance after the foil is in place? Express your answer in terms of C0.
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