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Potential at a Point Due to a Dipole

Capacitance :...

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Capacitance : There are two concentric spheres, of which inner(radius a) is earthed and outer(radius b) is given a charge Q. What is the capacitance of the system?

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A_{1}

A_{2}

r_{1}

r_{2} (r_{2} > r_{1})

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