A rectangular coil of 40 turns has length 12 cm and breadth 8 cm
PHYSICS · Subjective · CBSE · Physics · Moving Charges and Magnetism · Moving Charges and Magnetism
Problem
A rectangular coil of 40 turns has length 12 cm and breadth 8 cm. It carries a steady current of 2.5 A.
(i) Calculate the magnetic dipole moment of the coil.
(ii) The coil is placed in a uniform magnetic field of magnitude 0.30 T such that the plane of the coil makes an angle of 45° with the field. Find the magnitude of the torque acting on the coil in this position.
(iii) By how much will the torque change if the current in the coil is doubled while the orientation remains the same?