Physics - Capacitor Question with Solution | TestHub

For a parallel plate capacitor $\mathrm{C}=\frac{{\epsilon }_0\mathrm{A}}{\mathrm{d}}$ $$\begin{array}{rl}\therefore & \mathrm{A}=\frac{\mathrm{Cd}}{{\epsilon }_0}=\frac{1\times 10^{-3}}{8.85\times 10^{-12}}\\ & =1.13\times 10^8{\mathrm{m}}^2\end{array}$$ This corresponds to area of square of side $10.6\mathrm{km}$ which shows that one farad is very large unit of capacitance.