A short coil with a square cross-section with a side of 30cm has 45 turns of wir

Question

A short coil with a square cross-section with a side of 30cm has 45 turns of wire. The plane of the coil is verticle, with the sides of the square in the vertical distance and along the "west to east" line. There is a current of 3A flowing through the coil from west to east through the top segment and from east to west through its bottom segment. A horizontal magnetic field of .2T is pointing east. What is the torque applied to the coil and which way is it turning the coil when viewed above? Please show your work!

Explanation / Answer

torque ? = nIAB

? = 45 * 0.3*0.3* 3*0.2

? = 2.43 N-m

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