Amount of work done in moving a charge qo from centre of ring to an axial point at X v8a will be, if charge given to ring is Q and 'a being the radius: Qgo 1 6T0a 2 Qgo 6TE0a 3 Zero Qqo 4TE0a 4
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Explanation:
As the displacement and and centripetal force (electrostatic attraction force between charges ) are perpendicular to each other therefore work done
W=Fdcos90
0
=0
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