The primary and secondary coils of a transformer each have an inductance of `200 xx 10^-6 H`.The mutual inductance (M) between the windings is `4 xx 10^-6 H`. What percentage of the flux from one coil reaches the other?

A pair of adjacent coils has a mutual inductance of 1.5H. If the current in one coil changes from 0 to 10 A in 0.2s, what is is the change of flux linkage with the other coil?

The current increases at the rate of 10A s^-1 in the coil of inductance of 1.26 xx 10^-3 H. Calculate the magnitude of self induced emf

A current 10 A in the primary of a transformer is reduced to zero at the uniform rate of 0.1 second. If the co-efficient of mutual inductance is 3H, what isthe e.m.f. induced in the secondary and change in the magnetic flux per turn in the secondary if it has 50 turns?

The coefficient of mutual inductance between a pair of coils is 5mH. Find the e.m.f.induced in one coil when the current in the other coil changes at the rate of 250A//s .

If the earth were a perfect sphere of radius 6.4 xx 10^6 m rotating its axis with the perod of one day (8.64 xx 10^4 s) . What is the difference in accelaration due to gravity from poles to equator?

The mutual inductance (M) of the two coils is given as 1.5H . The self inductance of the coils are , L_1 = 5H , L_2 = 4H .Find the coefficient of coupling between the coils.

A circular coil of diameter 10 cm is placed in a magnetic field of induction 2 xx 10^(-4)T . The magnitude of flux linked with coil when the plane of coil makes an angle 45^@ with the field is

The magnetic induction of the centre of circular coil carrying current of 1.4 A is 1.76 xx 10^(-6) N/A m then the circumference of the loop is

A current in one coil changes from 5 A to 3 A in 0.2 sec and the co-efficient of mutual inductance of second coil is 10 mH. The e.m.f. induced in the 2nd coil is

Through a coil of radius 3 cm and 25 turns, a current is passed so as to produce a magnetic induction of 10pi xx 10^-5 wb//m^2 , at a point distant 4 m from the centre of the coil on its axis. Find the current.