FIGURE 21-9 -Three Equal Point Charges Are Placed at Three of the Three

Multiple Choice

FIGURE 21-9
-Three equal point charges are placed at three of the corners of a square of side d as shown in Fig. 21-9. Which of the arrows shown represents the direction of the net electric field at the center of the square?

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