What happens to the torque exerted on a coil when it is positioned parallel to the magnetic field???????

When a coil is positioned parallel to the magnetic field, the torque exerted on the coil is zero. This is because the angle between the magnetic field and the coil is 0 degrees, resulting in no force being applied to the coil to cause it to rotate.

When a coil is positioned parallel to the magnetic field, the torque exerted on it becomes zero. This is because the magnetic force acting on each of the current-carrying segments of the coil is perpendicular to the displacement of that segment. As a result, the net torque on the coil is zero.