Learning Goal: use the definition of electric field to analyze the field created by a system of point charges. Two point charges, q -2.10 C and q = fixed along the x axis and separated by a distance d = 9.10 cm, as shown. Point P is located at (x, y) = (d,d). 91 d P. 92 8.30 C, are d X Later, a third point charge q3 = 2.70 C is positioned along the y axis at a distance d 9.10 cm from q, as shown. = 93 P. 13 92 91 d X Macmillan Learning In the two-charge configuration, what is the y component Ey (P) of the electric field produced by q and q at point P? Ey (P) = N/C