Question

A capacitor consists of two similar square aluminium plates, each 10 cm x 10 cm mounted parallel and opposite to each other

Answer 1

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C=(e0 x A)/d

A = area = 10cm x 10cm

A = 0.1m x 0.1m = 0.01 m^2

C = (8.85 x 10^-12 x 0.01)/0.75 x 10^-3

C=1.18 x 10^-10 Farad

But, Q (charge) = CV

Q= 1.18 x 10^-10 x 150

Q= 1.77 x 10^-8 C

Q= 17.7 x 10^-9 C

Q = 18nC

Answer 2

Answer:

Explanation:

Its area will be

As we know that the area of a square =side^2

=>2×(side of 1 square)^2

=>2x10^2

=>200cm^2

Hence,the area of two squares is20cm^2