A positive charge q is placed in front of conducting solid cube at a distance d from its centre. Find the electric field at the centre of the cube due to the charges appearing on its surface.A. `(1)/(4 pi in_(0)) .(q)/(d^(2))`B. `(1)/(4 pi in_(0)) .(2q)/(d^(2))`C. `(1)/(4 pi in_(0)) .(3q)/(d^(2))`D. `(1)/(4 pi in_(0)) .(4q)/(d^(2))`

A positive charge q is placed in front of conducting solid cube at a d

1.	A positive charge q is placed in front of conducting solid cube at a distance d from its centre. Find the electric field at the centre of the cube due to the charges appearing on its surface.A. `(1)/(4 pi in_(0)) .(q)/(d^(2))`B. `(1)/(4 pi in_(0)) .(2q)/(d^(2))`C. `(1)/(4 pi in_(0)) .(3q)/(d^(2))`D. `(1)/(4 pi in_(0)) .(4q)/(d^(2))`
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