Learning Goal: Part B To understand the origin of the torque on a current loop d

Question

Learning Goal: Part B To understand the origin of the torque on a current loop due to the magnetic forces on the current-carrying wires. Give a more general expression for the magnitude of the torque T. Rewrite the answer found in Part A in terms of the magnitude of the magnetic dipole moment of the current loop m. Define the angle between the vector perpendicular to the plane of the coil and the magnetic field to be noting that this angle is the complement of angle in Part A. This problem will show you how to calculate the torque on a magnetic dipole in a uniform magnetic field. We start with a rectangular current loop, the shape of which allows us to calculate the Lorentz forces explicitly. Then we generalize our result. Even if you already know the general formula to solve this problem, you might find it instructive to discover where it comes from. Give your answer in terms of the magnetic moment m, magnetic field B, and View Available Hint(s) Figure 1 of 3 Submit Part C View from the side

Explanation / Answer

we know, torque acting on a current loop placed in uniform magnetic field,

T = m*B*sin(phi) <<<<<<<<<------Answer

here m = N*I*A

N ---> no of turns
I ---> current in the loop
A ---> Area of the loop
B --> magnetic field
phi ---> angle between normal to the loop to B

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