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Question
A positive charge q is placed in front of a conducting solid cube at a distance d from its centre. Find the electric field at the centre of the cube to the charges appearing on its surface.
Solution
Electric field at a point due to a given
charge, E = \[\frac{q}{4\pi \in_0 d^2}\] ,
where q is the charge and d the distance between the point and the charge.
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