Torque on a Wire: Find Max & Range of Energies

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The discussion focuses on calculating the maximum torque on a circular wire in a magnetic field and determining the range of potential energies for different orientations. The wire has a diameter of 10.0 cm, carries a current of 5.00 A, and is placed in a 3.00 mT magnetic field. The user attempts to calculate torque using the formula T = mu x B, substituting in the appropriate values for current, area, and magnetic field strength. Clarification is sought on whether the torque calculation is correct and guidance is requested for calculating potential energy. The conversation emphasizes the need for accurate area calculation of the coil to proceed with the energy assessment.
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Homework Statement


A wire is formed into a circle having a diameter of 10.0 cm and placed in a uniform magnetic field of 3.00 mT. The wire carries a current of 5.00 A. Find (a) the maximum torque on the wire (b) the range of potential energies of the wire field system for different orientations of the circle.


Homework Equations



T= mu x B

The Attempt at a Solution



For part a I did: T= mu x B= IA x B= I((2pi)(.5m)^2) x B
= (5.00A)((2pi)(.5m)^2) x (3.00mT)

is this right? if not what do I need to do?

For part b: I have no idea and any help would be appreciated.
 
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Check the area of the coil.
 

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