# Charges +q and –q are located at the corners of a cube of side as shown in figure. Find the work done to separate the charges to infinite distance.

$\large\frac{1}{4 \pi \in_0} \large\frac{q^2}{a} \times \large\frac{4}{\sqrt 6}$$[3 \sqrt 3 -3 \sqrt 6 -\sqrt 2]$