Four point charges are placed at the corners of a square as shown in the figure. Each side of the square has length 2.0 m. Determine the magnitude of the electric field at the point P, the center of the square. 3.0 × 10–6 N/C

1.8 × 104 N/C

2.7 × 104 N/C

2.0 × 10–6 N/C

9.0 × 103 N/C