Four point particles are located at the corners of a square (Fig. P17.15). The two particles on

Question:

Four point particles are located at the corners of a square (Fig. P17.15). The two particles on the left each carry a charge +Q. If the electric field at the center of the square is directed to the right (along the +x axis), what might the charges on the particles on the right be?

Figure P17.15

+Q х +Q