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Find the capacitance of layer of A12 O3 that is 0.5μm thick and 2000mm^2 of square area εr = 8.

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Find the capacitance of layer of A12 O3 that is 0.5μm thick and 2000mm^2 of square area εr = 8.

(a) 1000μF

(b) 0.283μF

(c) 16μF

(d) 2.83μF

I got this question by my college professor while I was bunking the class.

The doubt is from Properties of Dielectric Materials in section Dielectrics of Engineering Physics II

1 Answer

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Right choice is (b) 0.283μF

Easiest explanation: C = (εr ε0 A)/d

Capacitance = 0.283μF.

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