Self-Induction and Mutual Induction
Self-Induction and Mutual Induction: Overview
This topic covers concepts, such as, Induction, Self Induction, Back EMF & Coefficient of Mutual Inductance etc.
Important Questions on Self-Induction and Mutual Induction
The SI unit of coefficient of mutual induction is

The S.I. unit of self-inductance of a coil is

The circuit arrangement given below shows that when A.C. passes through the coil , the current starts flowing in coil .
Mention the underlying principle involved.

What is the expression for the self-inductance of a long, air-cored solenoid of length , radius , and having number of turns?

Two coils are fixed in space at some distance from each other such that there is a flux linkage between them. When coil has no current and the current in the coil increases at the rate , the emf in the coil is . When coil has a current of , the flux linkage in coil (in ) is

If of energy is stored for the flow of current of in an inductor, then its inductance value is

Two coils are fixed in space at some distance from each other such that there is a flux linkage between them. When coil has no current and the current in the coil increases at the rate , the emf in the coil is . When coil has a current of , the flux linkage in coil (in ) is

What is the expression for the self-inductance of a long, air-cored solenoid of length , radius , and having number of turns?

If the number of turns per unit length of a coil of solenoid is doubled, the self-inductance of the solenoid will

What is self inductance of a coil which produces , when current in it changes from to in one millisecond?

An inductance and a resistance are connected in series with a battery of emf . If the maximum rate (in J/sec) at which the energy is stored in the magnetic field is then find . [Take and .

In the figure magnetic energy stored in the coil is:

A coil of inductance having negligible resistance is connected to a source of supply whose voltage is given by volt. (where is in second). If the voltage is applied when then the energy stored in the coil after is,

A coil carries a current of , the energy stored in is

Radii of two conducting circular loops are and respectively, where . Centres of both loops coincide but planes of both loops are perpendicular to each other. The value of mutual inductance for these loops

What will be the self-inductance of a coil of turns if a current produces a magnetic flux ?

The phenomenon due to which there is an induced current in one coil due to the current in a neighbouring coil is:

The self-inductance of a long solenoid carrying current is independent of:

The SI unit of inductance, the Henry, can be written as :-
(i)
(ii)
(iii)
(iv) ohm-second

Consider two solenoids and such that and where and are the length and area of the two solenoids respectively. If the magnetic energy stored in the both solenoids is same. What should be the ratio of their magnetic fields
