I am not sure why or how the distance away from a charged conductor, r, is greater than the radius of that charged conductor or surface, R, then the electric field is that of a point charge.. if r>>R then we are far from conductor. if r<<R then we are close to the conductor..(adsbygoogle = window.adsbygoogle || []).push({});

these are things textbook says but I dont know why this is can someone please explain why the above is true?

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# Why r R is electric field of a point charge?

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