A solenoid is of length `50 cm` and has a radius of `2cm`. It has `500` turns. Around its central section a coil of `50` turns is wound. Calculate the mutual inductance of the system.

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 ?

A long solcnoid of length 1m, cross-sectional area 10cm^(2) , having 1000 turns has wound about its centre a small coil of 20 turns. Compute the mutual inductance of the pair of solenoid and the coil . What is the induced EMF in the coil when the current in the solenoid changes at the rate of 10 A//s ?

A long solenoid of length 50 cm and cross sectional area 10cm^2 is closely wound with 1000 turns of wire. A small coil of 10 turns surrounds it at its centre. Calculate the mutual inductance of the two coils.

A solenoid of 1000 turns is wound over a length of 40 cm. The area of cross section is 20 cm^(2) . Around its central section, a coil of 500 turns is closely wound. If an initial current of 1 A in the solenoid is reversed in 0.3 s, find the emf induced in the coil.

A solenoid of length 20 cm and radius 4cm has 1000 turns and is placed inside another identical solenoid but of radius 5 cm. Find the mutual inductance between the solenoids.

Over a solenoid of 50 cm length and 2 cm radius having 500 turns. Is wound another wire of 50 turns near the centre. Calculate mutual inductance of the two coils. If currents in primary changes From 0 to 5 a in 0.02 s, what is the emf induced in secondary coil ?

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?

Over a solenoid of 50cm length and 2cm radius and having 500turns is would another wire of 50 turns near the centre. Calculate (i) mutual inductance of the two coils (ii) Induced emf in the second coil when the current in the primary changes from 0 to 5A in 0.02 sec.