A square loop of side 'l' each side having uniform linear charge density 'lambda' is placed in 'xy' lane as shown in the figure There exists a non uniform electric field `vec(E)=a/l(x+l)hat(i)` where a and l are constants and x is the position of the point from origin along x-axis. Find the resultant electric force on the loop (in Newtons) if `l=10 cm lambda=20 muC//m and a=5 xx 10^(5) N//C`.