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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A circular coil of 100 turns and having an effective radius of 5 cm carries a current of 10 ampere, is suspended vertically in a uniform magnetic field of magnitude 2.0 T. The field lines run horizontally in the plane of the coil. calculate the force and torque on coil due to the magnetic field. In which direction should a balancing torque be applied to prevent the coil from turning?

A circular coil of 100 turns and having an effective radius of 5 cm carries a current of 10 ampere, is suspended vertically in a uniform magnetic field of magnitude 2.0 T. The field lines run horizontally in the plane of the coil. calculate the force and torque on coil due to the magnetic field. In which direction should a balancing torque be applied to prevent the coil from turning?

A circular coil of 100 turns and having an effective radius of 5 cm carries a current of 10 ampere A circular wire loop of radius R mass m carrying current I lies on a rough surface (as shown in Fig. 1.86). There is a horizontal magnetic field B. How large can the current I be before one edge of the loop will lift off the surface?