(adsbygoogle = window.adsbygoogle || []).push({}); 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 :).

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# Homework Help: A Single Turn, Square Loop (torque)

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