QJEEM24Ph25a7: JEE Main 2024 Physics - Class 12 JEEM24Ph25a7 Solution: A circular coil having 200 turns, area and carrying current is…

A circular coil having 200 turns, $2.5 \times 10^{-4} \mathrm{~m}^2$ area and carrying $100 \mu \mathrm{A}$ current is placed in a uniform magnetic field of $1 \mathrm{~T}$ . Initially the magnetic dipole moment $(\vec{M})$ was directed along $\vec{B}$ . Amount of work, required to rotate the coil through $90^{\circ}$ from its initial orientation such that $\vec{M}$ becomes perpendicular to $\vec{B}$ , is ________ $\mu$ J.