The adjacent diagram shows a charge $+Q$ held on an insulating support $S$ and enclosed by a hollow spherical conductor. $O$ represents the centre of the spherical conductor. and $P$ is a point such that $OP = x $ and $SP = r$ . The electric field at point $P$ will be
Medium
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Total charge will induce on the surface of conductor and will be distributed uniformly on the surface
$\therefore E = \frac {Q}{4\pi \varepsilon _0x}$
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