Question

Four charges +q,+q,-q,-q are placed respectively at the four corners A,B,C and D of a square of side a. calculate the force on a charge Q placed at the center of square.

Answer 1

any comment ...welcome

Answer 2

Answer:

1/4πe°.4√2q/a×a

Explanation:

parallel to side having charges +q and -q at its two ends .

so the answer is clear