Two conducting spheres each of radius R carry charge q. They are placed at a distance r from each other, where `r gt 2 R`. The neutral point lies at a
Two conducting spheres each of radius R carry charge q. They are placed at a distance r from each other, where `r gt 2 R`. The neutral point lies at a distance `r/2` from either sphere. If the electric field at the neutral point due to either sphere be E, then the total electric potential at that point will be -
A. `r E//2`
B. `r E`
C. `RE//2`
D. `RE`
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