Physics - Electrostatics Question with Solution | TestHub

Field of an infinite line charge is non-uniform ($E\propto \frac{1}{r}$)

For a suitable orientation the forces on the two charges can cancel, so net force MAY be zero, not must. (B) correct

Torque $\vec{\tau }=\vec{p}\times \vec{E}=0$ when $\vec{p}$ is parallel to $\vec{E}$, so torque MAY be zero, not must. (D) correct

Answer: (B), (D)