(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 119 cm wire carries a current of 1.5 A. The wire is formed into a circular coil and placed in a B-field of intensity 1.9 T.

1) Find the maximum torque that can act on the loop.

2) How many turns must the coil have, so that the torque is maximized?

2. Relevant equations

1) NIAB(sin theta)

3. The attempt at a solution

For #1, I used the following equation. For area I inputed 2*pi*r*L. I know the length from the information given is 1.19m. However, I don't know how to find the r to solve for the area. Also, I am confused about the turns given. I thought that there would only be one turn because the wire is in a circular coil.

For #2, I would use the answer fron #1 and solve for N.

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# Homework Help: Torque on a Current Loop in a B Field

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