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Electric charge Q is uniformly distribut...

Electric charge Q is uniformly distributed around a thin ring of radius a. find the potential a point P on the axis of the ring at a distance x from the centre of the ring .

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Since the entrie charge is at distance r = `sqrt(x^(2) + a^(2)) ` from the point P, therefore, the potential at p due to the total charge Q is
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AAKASH INSTITUTE ENGLISH-ELECTROSTATIC POTENTIAL AND CAPACITANCE -EXAMPLE
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