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Calculate the distance between the plates of the capacitor having C=20F, actual permittivity = 5F/m n=3 and A=4m^2.

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Calculate the distance between the plates of the capacitor having C=20F, actual permittivity = 5F/m n=3 and A=4m^2.

(a) 1m

(b) 2m

(c) 3m

(d) 4m

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The query is from Capacitance of a Multi Plate Capacitor in section Capacitance and Capacitors of Basic Electrical Engineering

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Correct choice is (b) 2m

To explain: The formula for capacitance of a multi plate capacitor: C=Actual permittivity*(n-1)*A/d.

Substituting the given values in the equation, we get d=2m.

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