A conducting wire of 100 turns is wound over 1 cm near the centre of a solenoid of 100 cm length and 2 cm radius having 1,00 turns. Calculate coefficient of mutual inductance of the two solenoids.

A solenoid of length 50cm, having 100 turns carries a current of 2.5A. Find the magnetic field in the interior of the solenoid.

A solenoid of length 30 cm, having 150 turns carries of 2.1 A. calculate the magnitude of magnetic field in the interior of the solenoid.

A solenoid of length 50cm, having 100 turns carries a current of 2.5A. Find the magnetic field at one end of the solenoid.

An air core solenoid of 80 cm length has 500 turns and its circular cross-section has a diameter of 2 cm, calculate the self inductance of the solenoid?

A secondary coil of N_2 turns is wound on a long solenoid of cross-section. A and having a primary coil n_1 turns per unit length. What is mutual inductance of the two coils?

Figure shows a short solenoid of length 4 cm, radius 2.0 cm and number of turns 100., lying inside on the axis of a long solenoid, 80 cm long and number of turns 1,500. What is the flux through the long solenoid, if a current of 5.0 A flows through the short solenoid? Also obtain the mutual inductance of the two solenoids.

Two concentric circular loops of radii 1 cm and 20 cm are placed coaxially. Find mutual inductance of the arrangement.

A long solenoid of length 1 m, cross sectional area 10 cm^2 , having 1000 turns has wound about its centre a small coil of 20 turns. Compute the mutual inductance of the two circuits. What is e.m.f. in the coil when the current in the solenoid chanages at the rate of 10 As^-1 ?