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Two charges q, and q, are placed 30 cm apart, as shown in the figure. A third charge q, is moved along the arc

Two charges q, and q, are placed 30 cm apart, as shown in the figure. A third charge q, is moved along the arc of a circle of radius 40 cm from C to D. The change in the potential energy of the system is k, where k is 4E C. (a) 8q (c) 89 40 cm 91 30 cm (b) 6q (d) 69

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