A coil has an inductance of `1.5 xx 10^-2` H. Calculate the e.m.f. induced, when current in the coil changes at the rate 200 ampere per second.

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 coil has a self inductance of 10 mH. What is the maximum magnitude of the induced em.f. in the inductor, when a current I = 0.1 sin 200 t A is sent through it?

A pair of adjacent coils has a mutual inductance of 1.5 H. If the current in one coil changes from 0 to 20 A in 0.5 s, what is the change of flux linkage with the other coil?

An air-cored solenoid is of length 0.3 m area of cross-section 1.2 xx 10^-3m^2 and has 2500 turns. Around tis central section, a coil of 350 turns is wound. The soelnoid and the coil are electrically insulated from each other. Calculate the e.m.f. induced in the coil , if the intial current of 3 A in the solenoid is reversed in 0.25 s.

A rectangular coil having 200 turns and size 0.30 xx 0.05 m^2 is placed perpendicular to a magnetic field. The field changes from 5x10^(-3) Wbm^(-2) to 2x10(-3) Wbm(-2) in the time interval of 3 millisecond. Calculate the e.m.f. induced in the coil. If the resistance of the coil is 15Omega , find the value of current flowing through it.

In a coil of self-induction 5 H, the rate of change of current is 2 A s^-1 . Then, e.m.f. induced in the coil is

An e.m.f. of 50 millivolt is induced in a coil, when the current int eh neighbouring coil changes form 10 ampere to 5 ampere in 0.1s . What is the mutual inductance of the coils?