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Uncharged metallic spheres of radii 6R, 3R and 2R are mounted on insulated stands (separated by large distance). The spheres of radii 2R and 6R are charged to a potential V above earth potential. All three spheres are then briefly joined by a copper wire

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Uncharged metallic spheres of radii 6R, 3R and 2R are mounted on insulated stands (separated by large distance). The spheres of radii 2R and 6R are charged to a potential V above earth potential. All three spheres are then briefly joined by a copper wire