Magnitude of torque AB A rectangular loop consists of 124 closely wrapped turns

Question

Magnitude of torque
AB

A rectangular loop consists of 124 closely wrapped turns and has dimension 0.400 m by 0.300 m. The loop is hinged along the y-axis, and the plane of the coil makes an angle of 30.0degree with the x-axis (see figure below) What is the magnitude of the torque exerted on the loop by a uniform magnetic field of 0.808 T directed along the x-axis when the current in the windings has a value of 1.20 A in the direction shown? N middot m What is the expected direction of rotation of the loop? clockwise as viewed from above counterclockwise as viewed from the above The magnitude is zero.

Explanation / Answer

Magnitude of net torque is zero.

All forces cancel each other on x-z plane and no forces for wires along y axis because the magnetic field is perpendicular.

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