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 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 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.

In Fig. 30-54, a 120-turn coil of radius 1.8 cm and resistance 5.3 Omega is coaxial with a solenoid of 220 turns/cm and diameter 3.2 cm. The solenoid current drops from 0.42 A to zero in time interval Deltat = 0.67 s. What current is induced in the coil during Deltat ?

A solenoid having 500 turns and length 2 m has radius of 2 cm , the self inductance of solenoid

A solenoid coil of 300 turns//m is carrying a current of 5A . The length of the solenoid is 0*5m and has a radius of 1cm . Find the magnitude of the magnetic field well inside the solenoid.

Two solenoids A and B having radius of 5 cm and 3 cm respectively are placed coaxially such that A surrounds B. The length of both the solenoid is 30 cm and number of turns of A and B are 70 turns per cm and 50 turns per cm, respectively. What will be the mutual inductance of the system?

Find the length of a solenoid of radius 2 cm and 800 turns per metre having self-inductance of 0.115 H.

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 ?