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A spherical conducting shell of radius R has a surface charge density of $\sigma$ . Point P is at a distance $r (> R)$ from the centre of the shell.What is the magnitude of the electric field at point P?

1 Answer

$(B)\;\frac{\sigma R^2}{\in_0r^2}$
Hence B is the correct answer.
answered Jun 4, 2014 by meena.p

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