An electron having charge (-e) located at A, in the presence of a point charge +q located at $O$, is

Question

An electron having charge (-e) located at A, in the presence of a point charge +q located at $O$, is moved to the point $B$ such that $O A B$ forms an equilateral triangle. The work done in the process is equal to\

Professor PC Thomas Classes · Answer

Work done $=$ difference in potential $	imes$ charge\ $\mathrm{W}_{\mathrm{AB}}=\left(\mathrm{V}_{\mathrm{B}}-\mathrm{V}_{\mathrm{A}}ight) \mathrm{q}=0$\ since $V_{A}=V_{B}=\frac{1}{4 \pi \varepsilon_{0}} \frac{q}{r}$\