Two wires of equal lengths carrying equal currents bent in the form of two loops, one in square shape and the other in circular shape having one turn only are suspended in same, uniform magnetic field perpendicular to the plane of loops.

Choose the correct option

both the loops experience zero torque

The correct answer is Option (2) → both the loops experience zero torque

Torque on a current loop: $\;\tau = n I A B \sin\theta$

If the uniform magnetic field is perpendicular to the plane of the loop, then the normal to the loop is parallel to $\vec{B}$.

So, $\theta = 0^\circ$ or $180^\circ \;\;\Rightarrow\;\; \sin\theta = 0$

Hence, $\tau = 0$ for both loops.

Final Answer: Both the loops experience zero torque.