JEE Advanced 2021 · Paper 1, Physics question 10

Question Stem for Question Nos. 9 and 10

Two point charges $-Q$ and $+Q/\sqrt3$ are placed in the $xy$-plane at the origin $(0, 0)$ and a point $(2, 0)$, respectively, as shown in the figure. This results in an equipotential circle of radius $R$ and potential $V = 0$ in the $xy$-plane with its center at $(b, 0)$. All lengths are measured in meters.