Question: A non-polar molecule is located at the axis of a thin uniformly charged ring of radius R. At what distance x from the ring's centre

A non-polar molecule is located at the axis of a thin uniformly charged ring of radius R. At what distance x from the ring's centre is the magnitude of the force F acting on the given molecule
(a) Equal to zero;
(b) Maximum? Draw the approximate plot Fx (x).

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