A charge q = 4.11x10-9 C is placed at the origin, z = 0, and a second charge equal to -2 g is placed on the x axis at the location = 1.00 m. The electric potential vanishes at some point between the charges; that is, for a value of x = 0.333 m. -1 m -0.5 +q 0 V (V) 400+ 200- -200- -400+ x(1-x) X -2q 1m 1.5 x (m) Suppose the charge -2 g at 1.00 m is replaced with a charge -4 q, where q = 4.11x10-9. The charge +q is at the origin. Is the electric potential positive, negative, or zero at the point x=0.333 m?