JEE Advanced 2024 PYQs solutions | Physics | Paper -2| Magnetism| torque on loop problem

JEE Advanced 2024 PYQs solutions | Physics | Paper -2| Magnetism| torque on loop problem
A thin stiff insulated metal wire is bent into a circular loop with its two ends extending tangentially from the same point of the loop. The wire loop has mass m and radius r and it is in a uniform vertical magnetic field Bo, as shown in the figure. Initially, it hangs vertically downwards, because of acceleration due to gravity g, on two conducting supports at P and Q. When a current I is passed ◦through the loop, the loop turns about the line PQ by an angle 0 given by