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 $S$. What will happen to the charge?
- AIt will remain in equilibrium
- BIt can move inside $S$,but it cannot cross $S$
- CIt must cross $S$ at some time
- DIt may move,but will ultimately return to its starting point
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DifficultJEE MAIN 2021
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