An infinite filament carrying 12 az (A) of current lies on the z-axis, and a straight solid conductor segment of length 2l extends from point A (1, - l, 0) to point B (1, + l, 0) carrying 2 ay (A) of current.Find the torque T on the conductor segment about an origin at point P (1,0,0) as a function of l(i.e. the solution will be an equation for T as a function of the parameter l).