A charge of -3microcolumbs is a point p where the electric field is directed to the left and has a magnitude og 4*106 N/C.if the charge is replaced with +3microcolumbs,what happens to the electric field at p?
a)Moves radially outward toward q
b)Moves radially unwars toward q
c)Niether move radially inward and outward
d)can't be determined
I know that the answer is (c) but why?