Two points charges -Q and +Q√3 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.
Physics · Electrostatic · self potential energy and equipotential surface
Two points charges -Q and +Q√3 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.

Sub-question 1
The value of R is meter.
Sub-question 2
The value of b is meter.