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A charge of −9.0 nC is uniformly distributed around a thin plastic ring lying in a...

A charge of −9.0 nC is uniformly distributed around a thin plastic ring lying in a yz plane with the ring center at the origin. A −4.7 pC point charge is located on the x axis at x = 5.0 m. For a ring radius of 1.5 m, how much work must an external force do on the point charge to move it to the origin?

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Dosk dane -Vi ) 1.S -12

Work done = qV = charge × potential difference

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