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A charge q kept in front of a neutral m...

A charge q kept in front of a neutral metallic sphere. Find the electric field at the centre of sphere due to the induced charges on the surface of the sphere shown.

Strategy `:` The net electric field inside the conductor is zero. Thsi is produced by induced charges and the external charge.

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`E_("induced")+ E_(q) = 0 implies E_("induced ")= -(q)/(4piepsilon_(0)d^(2))`
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