A charge Q is uniformly distributed over a plasticplate. The electric field at a point P close to the center of the plate is 10 V/m. If the plastic plate is replaced by a copper plate of the same geometrical diumensions and carrying charde Q, the electric field at the point p will become 10 v because field does not depend on conducting material . Am i right?

 

ii)  A metallic plate having no net charge is placed near a finite metal late carrying a positive charge. The electric force on the partice will be towards the plate. Why? it should be away from positive charge.