a charge Q is uniformly distributed on a plastic plate .the electric field at point p neat the center of the plate is 10 v/m .if this plate is replaced by copper plate of same dimension and charge ,the electric field at the point p will become a) zero b)10 v/m c)20 v/m
Inside the conductor EF is zero.............for the case of plastic we have 10V/m...........but for conductor at the center inside it EF=0
you are right/.
sir , the net charge on the plate should be Q ??? isn't it ??
And u r making the total charge as zero !!!???
+q - q =0 ??
its abt a point outside the plate
copper is a conductor..whereas plastic is an insulator..so electric field near a charged conductor is sigma/epsilon..whereas for an insulatror it is sigma /2*epsilon
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