A charge Q is uniformly distributed over a large plastic plate.
A charge Q is uniformly distributed over a large plastic plate. The electric field at a point P close to the centre of the plate is 10V/m. If the plastic plate is replaced by a copper plate of the same geometrical dimensions and carrying the same charge Q, the electric field at the point P will become
(a) zero
(b) 5V/m
(c) 10V/m
(d) 20V/m.
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