Physics - Electrostatics Question with Solution | TestHub

The electric field at point $O$ is $\frac{q}{8\pi {\epsilon }_0{R}^2}$ directed along the negative $x$-axis

The potential energy of the system is zero

The magnitude of the force between the charges at $C$ and $B$ is $\frac{q^2}{54\pi {\epsilon }_0{R}^2}$

The potential at point $O$ is $\frac{q}{12\pi {\epsilon }_{0}R}$