A circular loop of area 0.04 ~m ^2 carrying a current of 10 ~A is held with its plane perpendicular to a magnetic field induction 0.4 ~T Then the torque acting on the circular loop is :

Step-by-step solution

The torque acting on a current loop in a magnetic field is given by the formula = m B , where m is the magnetic dipole moment and B is the magnetic field induction. The magnitude of the torque is given by = mB , where is the angle between the area vector A (which is perpendicular to the plane of the loop) and the magnetic field vector B . The problem states that the plane of the loop is perpendicular to the magnetic field. This implies that the area vector A is parallel to the magnetic field vector B . Therefore, t