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A spherical conductor has a charge of 20 uC and a diameter of 20cm (r = 10cm). If a test charge, q =
25mC, is to be moved from A to B, given that points A and B are 15 cm and 5 cm from the center of
the conductor, respectively. Determine the following:
A. The potential at A
B. The electric potential energy at B
C. The rate of change of the potential with respect to length or displacement in the conductor

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