A charged sphere is placed on an insulating stand. Points P, Q and R lie in a straight line away from the sphere. P is nearest the sphere and R is furthest away. Which statement is correct?
The field is strongest at R, and a charge there feels most force
The field has the same strength at P, at Q and also at R
The field is strongest at P, and a charge there feels most force
The field is strongest at Q, because it lies between P and R