Hw much potential energy is stored when a small object q

A ring of radius 5.5 cm is fixed in place and carries a charge of +5.00 µC uniformly spread over its circumference.

(a) How much potential energy is stored when a small object (q = +2.50 µC, mass 1.70 g) is moved from very far away to the center of the ring?

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Hw much potential energy is stored when a small object q : a ring of radius 5.5 cm is fixed in place and carries a charge of 5.00 microc uniformly spread over its circumference.a

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