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Consider an ideal parallel plate capacitor, having vacuum between two plates of area A and separation d. The shape of the plates is arbitrary. By the following steps, prove that the capacitance is 0 d where ε0 is the permittivity. Assume that the charge on each plate is electric field E between the plates is uniform. , and that the Use Gauss law to calculate the electric field E between the plates in terms of Q and A. (Use a Gaussian pillbox that just encloses one of the plates, and remember that the field on the outside is zero. 1. 2. Use your expression for E to calculate the voltage V across the plates in terms of Q - A, and d. 3. Calculate the capacitance C from the definition Q-CV.
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