Torque acting on a coil carrying current 'I' situated parallel to magnetic field of induction 'B' having of turns 'n' and area 'A' is

Step-by-step solution

The magnetic moment of a current-carrying coil having n turns, area A , and current I is given by: M = nI A The torque acting on a magnetic dipole placed in a uniform magnetic field B is given by the cross product of the magnetic moment and the magnetic field: = M B Substituting the expression for magnetic moment into the torque equation, we get: = nI( A B ) Answer: nI ( A B )