FIGURE 19-1 -Three Equal Charges Are at Three of the Corners of the Corners

Multiple Choice

FIGURE 19-1
-Three equal charges are at three of the corners of a square of side d. A fourth charge of equal magnitude is at the center of the square as shown in Figure 19-1. Which of the arrows shown represents the net force acting on the charge at the center of the square?

A) A
B) B
C) C
D) D
E) none of the above