Inductance : Self and Mutual

Two inductors of inductance L each are connected in series with opposite magnetic fluxes. The resultant inductance is (Ignore mutual inductance)

(A): The working of dynamo is based on the principle of self induction. (R) : Self induction of a coil is numerically equal to the magnetic flux linked with the coil, when a unit current flow through it.

In Fig, the mutual inductance of a coil and a very long straight wire is M , coil has resistance R and self-inductance L . The current in the wire varies according to the law I = at , where a is a constant and t is the time, the time dependence of current in the coil is

Two different coils of self inductance L 1 ​ and L 2 ​ are placed close to each other so that the effective flux in one coil is completely linked with other. If M is the mutual inductance between them, then

Self inductance of a soleniod can be increased by

A coil of wire of certain radius has 600 turns and a self inductance of 108mH. What will be the self inductance of a second similar coil of 500 turns?

A coil of wire of a certain radius has 600 turns and a self-inductance of 108 mH . The self-inductance of a 2^(nd) similar coil of 500 turns will be

A coil of wire of a certain radius has 100 turns and a self inductance of 15 mH. The self inductance of a second similar coil of 500 turns will be

Inductance of a solenoid is 3H and it consist of 500 truns . If number of turn make twice , then the value of self inductance becomes :

Find the mutual inductance of a straight long wire and a rectangular loop, as shown in the figure.