Moving Charges And Magnetism

\(\mathrm{A}, \mathrm{B}\) and \(\mathrm{C}\) are three parallel conductors of equal lengths and carry currents I, I and 2I respectively as shown in figure. Distance \(A B\) and \(B C\) is same as '\(d\)'. If '\(F_1\)' is the force exerted by \(\mathrm{B}\) on \(\mathrm{A}\) and \(\mathrm{F}_2\) is the force exerted by \(\mathrm{C}\) on \(\mathrm{A}\), then