A circular coil of radius 0.01 m has 100 turns and a current 7A. It is suspended freely in a magnetic field 0.2 T. Which position of it will be be in unstable equilibrium? Find potential energy of the coil in both the cases.

A circular coil of radius 0.01 m has 100 turns and a current 7A. It is suspended freely in a magnetic field 0.2 T. Which position of it will be be in stable equilibrium.

A circular coil of 30 turns and radius 8.0 cm carrying current of 6.0 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.0 T. The field lines make an angle of 60^@ with the normal to the coil. Calculate the magnitude of the counter torque, that must be applied to prevent the coil from turning.

A circular coil of 30 turns and radius 8.0 cm carrying a current of 6.0A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.0 .The field lines make an angle of 60^(@) with the normal of the coil. Calculate the magnitude of the counter torque that must be applied to prevent the coil turning.

A rectangular coil of N turns and area of cross section A is held in a magnetic field B=B_0 sin omega t. Deduce an expression for the emf induced in the coil.

A rectangular coil of sides 12 cm and 8 cm having 1000 turns and carrying a current of 250 mA is placed in a uniform magnetic field of 0.25 tesla directed along positive x-axis. (i) What is the maximum torque the coil can expereince and in which direction? (ii) For which orientation of the coil is the torque zero?

The radius of a circular coil having 100 turns is 5 cm and a current of 0.5A is flowing through this coil. If it is placed in a uniform magnetic field of stregth 0.001 T, then what torque will act on the coil, when the plane of the coil is perpendicular to the magnetic field ?

The radius of a circular coil having 100 turns is 5 cm and a current of 0.5A is flowing through this coil. If it is placed in a uniform magnetic field of stregth 0.001 T, then what torque will act on the coil, when the plane of the coil is parallel to the magnetic field,