A point charge Q has been placed at a point outside a neutral spherical conductor. The induced charge density at point P on the surface of the conduct
A point charge Q has been placed at a point outside a neutral spherical conductor. The induced charge density at point P on the surface of the conductor is `-sigma` The distance of point P from the point charge Q is 2R (where R is radius of the conductor). Find the magnitude and direction of electric field at a point outside the conductor that is very close to its surface near P.
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