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A cavity is taken out from a uniform con...

A cavity is taken out from a uniform conducting sphere. Inside the cavity a dipole is placed as shown in the figure. Find the potential at point `P` (in Volt).
(`q=10^(-8)C`, `l=0.1mm`, `theta=30^(@)`, `d=10 cm`, `R=12cm`)

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Charge on the outside surface of conducting sphere is zero so field and thus potential at any point outside the sphere is zero.
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