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Twelve identical point charges q are equally spaced around the circumference of a circle of radius R. The circle is centered at the origin. One of the twelve charges, which happens to be on the positive x axis, is now moved to the center of the circle.

Find the magnitude of the net electric force exerted on this charge.

Express your answer in terms of some or all of the variables q, R, and appropriate constants.

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Category:- Physics
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