A suspended, vertical, circular coil of 50 turns and area `100cm^(2)` carrying a current of 30 mA, is in equilibrium in a uniform magnetic field of intensity 0.4 tesla, when the normal to the plane of the coil makes an angle of `30^(@)` with the field. Calcualte the torque on the coil due to the current.

A circular coil of 20 turns each of radius 10 cm and carrying a current of 5 A is placed in a uniform magnetic field of induction 0.10 T normal to the plane of the coil?

A circular coil of 1 turn and area 0.01m^(2) carries a current of 10A . It is placed in a uniform magnetic field of induction 0.1 tesla such that the plane of the circle is perpendicular to the direction of the field, the torque acting on the coil is

A coil of area 5cm^(2) and having 20 turns is placed in a uniform magnetic field of 10^(3) gauss. The normal to the plane of the coil makes an angle of 60^(@) with the magnetic field. The flux in Maxwell through the coil is:

A rectangular coil of n turns each of area A, carrying current I, when suspended in a uniform magnetic field B, experiences a torque tau=nIBAsin theta where theta is the angle with a normal drawn on the plane of coil makes with the direction of magnetic field. This torque tends to rotate the coil and bring it in equilibrium position. In stable equilibrium state, the resultant force on the coil is zero. The torque on coil is also zero and the coil has minimum potential energy. Read the above passage and answer the following questions: (i) In which position, a current carrying coil suspended in a uniform magnetic field experiences (a) minimum torque and (b) maximum torque? (ii) A circular coil of 200 turns, radius 5cm carries a current of 2*0A . It is suspended vertically in a uniform horizontal magnetic field of 0*20T , with the plane of the coil making an angle of 60^@ with the field lines. Calculate the magnitude of the torque that must be applied on it to prevent it from turning. (iii) What is the basic value displayed by the above study?

A circular coil of 30 turns and radius 8.0 cm carrying a current of 6.0 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.0T. 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 from turning.

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

A circular coil of 20turns and radius 10cm carries a current of 5A . It is placed in a uniform magnetic field of 0*10T . Find the torque acting on the coil when the magnetic field is applied (a) normal to the plane of the coil (b) in the plane of coil. Also find out the total force acting on the coil.

A circular coil of 200 turns, radius 5cm carries a current of 2*5A . It is suspended vertically in a uniform horizontal magnetic field of 0*25T , with the plane of the coil making an angle of 60^@ with the field lines. Calculate the magnitude of the torque that must be applied on it to prevent it from turning.

A circular coil of 30 turns and radius 15 cm carries a current of 5 A. Calculate the net torque on the coil when it is placed in a uniform magnetic field of 0.2 T normal to the plane of coil. Also calculate the net force on the coil.

A coil of 100 turns and area 5 square centimetre is placed in a magnetic field B = 0.2 T . The normal to the plane of the coil makes an angle of 60^(@) with the direction of the magnetic field. The magnetic flux linked with the coil is