on a half side of clock q charges are present and on the other side -q charges are present. Calculate the net force on the centre of clock whoseradius is r

Consider a positive charge at centre such that both repulsive and attractive forces due to charges act in same direction henceF=2kq*q/r*r2*(q*q)/(4π€*r*r)2*9*10^9*(q/r)^218*10^9*(q/r)^2I predicted that this would be answer.