Four point charges, each of the same magnitude, with varying signs are arranged at the corners of a square as shown in figure. Which of the arrows labeled H, V, X, and Z gives the correct direction of the net force that acts on the charge at the upper right corner? 5 71 5sin45 - 5+3. 5 Z 5 -Q a. b. H V V C. Z d The net force on that charge is zero. e. X -QO