A coil of 100 turns and 1cm radius is kept coaxially within a long solenoid of 8 turns per cm and 5 cm radius. Find the mutual inductance.

A circular coil of diameter 2 cm and 100 turns is placed at the centre of a long solenoid of radius 5 cm and 10 turns//cm . The mutual inductance of the two coils will be nearest to:

A short soleniod of radius a, number of turns per unit length n_(1) , and length L is kept coaxially inside a very long solenoid of radius b, number of turns per unit length n_(2) . What is the mutual inductance of the system?

A circular coil P of 100 turns and radius 2cm is placed coaxially at the centre of another circular coil Q of 100 turns and radius 20cm . Calculate (a) the mutual inductance of the coils (b) the induced emf in coil P when the current in the coil Q decreases from 5A to 3A in 0.04 sec (Take pi^(2)=10)

A 200 turn coil of radius 2 cm is placed coil axially within a long solenoid of 3 cm radius. If the turns density of the solenoid is 90 turns per cm, then calculate mutual inductance of 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.

A conducting wire of 100 turns is wound over and near the centre of a solenoid of 100 cm length and 2 cm radius having 600 turns. Calculate mutual inductance of two coils.