MCQ
In a certain charge distribution, all points having zero potential can be joined by a circle S. Points inside S have positive potential and points outside S have negative potential. A positive charge, which is free to move, is placed inside S
- AIt will remain in equilibrium
- BIt can move inside S, but it cannot cross S
- ✓It must cross S at some time
- DIt may move, but will ultimately return to its starting point

