Four charges q1 = q3 = -q and q2 = q4 = +q, where q = 6 µC, are fixed at the corners of a square with sides a = 1.3 m. (see attached .gif)
Calculate the x- and y-components of the net electric field at the midpoint M of the bottom side of the square.
Why dont the charges cancel in the field??
The distances and angles, are all equal
The charges are opposite.
SO how can there be a net electric field at that point (M)?
The Attempt at a Solution
havent calc'd anything cause i dont get why field shouldnt be zero
im totally stuck
thanks for any help sum1.