\text { Take } \varepsilon_{0}=8.85 \times 10^{-12} c^{2} / \mathrm{N} \mathrm{m}^{2} \mathrm{k}=9 \times 10^{9} \mathrm{Nm}^{2} / \mathrm{c}^{2} \text { 1. Given that } E=\frac{V}{d} \text { where } E \text

{ is Electric Field, } V \text { is Voltage and } d \text { is the distance between two plates and } C=\frac{A \epsilon_{0}}{d} \text { where } C \text { is capacitance and } A \text { is the Area of the plates. } \text { Show that Energy density }=\frac{1}{2} \epsilon_{0} E^{2}