Question

your charge qa = 3c, qb=-6 , qc = -3c
qd = 6c are located at the side of square
of side 20 cm. what do the force on a change
of 3 c placed at the centre of square​

Answer 1

Answer:

The charge placed at center won't experience any force.

Explanation:

The charges at corners have equal magnitude and opposite direction. Thus it will cancel out the force at center.