• question_answer A rectangular coil (Dimension $5cm\times 2.5cm)$ with 100 turns, carrying a current of 3 A in the clock-wise direction is kept centered at the origin and in the X-Z plane. A magnetic field of 1 T is applied along X-axis. If the coil is tilted through$45{}^\circ$about Z-axis, then the torque on the coil is : [JEE Main 9-4-2019 Morning] A) 0.55 Nm                     B) 0.27 NmC) 0.38 Nm         D) 0.42 Nm

$\left| {\vec{\tau }} \right|=\left| \bar{M}\times \bar{B} \right|$           $\tau =NI\times A\times B\times \sin {{45}^{o}}$           $\tau =0.27Nm$ Option [b]