1. The problem statement, all variables and given/known data A 0.790 m length of wire is formed into a single-turn, square loop in which there is a current of 12.4 A. The loop is placed in a magnetic field of 0.146 T, as shown in the figure below. http://img294.imageshack.us/img294/5043/cutj2167.gif [Broken] 2. Relevant equations Net torque = NIABsin(theta) 3. The attempt at a solution Okay so looking at the problem. I see that a wire the length of .790 is bent to for a single-turn square. So I take my length and divide it by 2. Which should be the length of each side of the square now. Now the area of a square is A = l*w or one of your sides squared. So that would give me an A of .156 m^2. Now as for N should it not just be 1. Since its a single turn square. B = .146 I = 12.4 Also since im looking for the maximum torque it should be a sin(90) correct? Well anyway when I use this formula I'm not getting the correct answer. So if someone could steer me in the right direction that would be great :).