Physics - Magnetism Question with Solution | TestHub

A coil in the shape of an equilateral triangle of side$10 \mathrm{cm}$lies in a vertical plane between the pole pieces of permanent magnet producing a horizontal magnetic field$20\mathrm{mT}$. The torque acting on the coil when a current of$0.2 \mathrm{A}$is passed through it and its plane becomes parallel to the magnetic field will be$\sqrt{x}\times {10}^{-5}\mathrm{Nm}$. The value of$x$is