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Find the capacitance of a multi plate capacitor whose actual permittivity= 5F/m, n=3, A=4m^2and d=2m.

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Find the capacitance of a multi plate capacitor whose actual permittivity= 5F/m, n=3, A=4m^2and d=2m.

(a) 10F

(b) 20F

(c) 30F

(d) 40F

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The above asked question is from Capacitance of a Multi Plate Capacitor in chapter Capacitance and Capacitors of Basic Electrical Engineering

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Correct choice is (b) 20F

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

Thus, C=5*(3-1)*4/2 = 20F.

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