Question

14. 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. Top right corner has a charge of 1 uC, bottom right corner has a charge of +4 uC, top left corner has a charge of +4 uC (top left and bottom right corners cancel out), and bottom left corner has a charge of -3 uC.

I am also confused on how to find the distance and where people are getting 1.414 from? I did the phyth. theorem and did the square root of 2^2 + 2^2 which was 2.8, but other people have gotten 1.414 as the answer for the distance. If you can also explain any angles and whether to use cos or sin.

Answer 1