Question

Two wires of equal lengths are bent in the form of two loops. One of the loop is
square shaped whereas the other loop is circular. These are suspended in a uniform
magnetic field and the same current is passed through them. Which loop will
experience greater torque? Give reasons?

Answer 1

here is your answer :)

circular loop has greater area than the square loop. so the circular loop will experience greater torque in magnetic field. because torque has direct dependance on area of the loop.

hope it's helpful

Answer 2

Answer: circular loop

Explanation:

We know, torque= IABsin(theta).

It is directly proportional to A i.e. area of the loop.

For given perimeter, the area of circular loop is maximum, so a circular loop will experience a greater torque.