A circular coil having 200 turns, 2.5 × 10⁻⁴ m² area and carrying 100 μA current is placed in a uniform magnetic field of 1 T. Initially the magnetic dipole moment M was directed along B. Amount of work, required to rotate the coil through 90° from its initial orientation such that M becomes perpendicular to B, i s _________ μJ.
Physics · Magnetic effect of current · Magnetic Dipole Moment, Torque and Equilibrium of Current-Carrying Loops
A circular coil having 200 turns, 2.5 × 10⁻⁴ m² area and carrying 100 μA current is placed in a uniform magnetic field of 1 T. Initially the magnetic dipole moment M was directed along B. Amount of work, required to rotate the coil through 90° from its initial orientation such that M becomes perpendicular to B, is _________ μJ.