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Calculate the capacitance if the dielectric constant=4, area of cross section= 10m^2 and the distance of separation between the plates is 5m.

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Calculate the capacitance if the dielectric constant=4, area of cross section= 10m^2 and the distance of separation between the plates is 5m.

(a) 7.08*10^-11F

(b) 7.08*10^11F

(c) 7.08*10^-12F

(d) 7.08*10^-10F

I had been asked this question in exam.

Origin of the question is Composite Dielectric Capacitor in chapter Capacitance and Capacitors of Basic Electrical Engineering

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The correct answer is (a) 7.08*10^-11F

To explain: The expression to find capacitance when a dielectric is introduced between the plates is:

C=ke0A/d. Substituting the given values in the equation, we get C = 7.08*10^-11F.

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