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  1. L

    Potential Difference Near a Charged Rod

    Homework Statement A long rod of length L = 7.8 m carries a uniform charge Q = -6.5e-08 coulombs. Calculate the potential difference VC - VA. The distance c is 4 cm, the distance b is 11 cm, and the distance a is 4 cm. Only part of the rod is shown in the diagram (it is longer than shown)...