Self and Mutual Induction

Two coils have inductances L₁ = 1200 mH and L₂ = 800 mH. They are connected in such a way that flux in the two coils aid each other and inductor is measured to be 2500 mH then Mutual inductor between the coils is ___________ mH.

The SI unit of coefficient of mutual induction is

The circuit arrangement given below shows that when A.C. passes through the coil $A$, the current starts flowing in coil $B$.

Mention the underlying principle involved.

When the current in an inductor is $1.0 A$, the energy stored in the inductor is $3.0\mathrm{mJ}$. If the current is reduced to $0.5 A$, the energy stored in the inductor would be

An air-core solenoid has an inductance of$10$Henry. It is carrying a current of $100$ Ampere. The amount of energy stored in the magnetic field that is created by the current is

The energy stored in a $40 \mathrm{mH}$ inductor when a current of $6 \mathrm{A}$ passes through it is

The current in a $25 \mathrm{mH}$ inductor changes at a constant rate of $5 \mathrm{A} {\mathrm{s}}^{–1}.$ The voltage induced in the coil is

Two coils of inductances $L_1$ and $L_2$ are linked such that their mutual inductance is $M$. Then

A long solenoid has $1000$ turns. When a current of $4A$ flows through it, the magnetic flux linked with each turn of the solenoid is $4\times {10}^{-3}$ Wb. The self-inductance of the solenoid is

Two coils of inductances ${\mathrm{L}}_1$ and ${\mathrm{L}}_2$ are linked such that their mutual inductance is $M$. Then,

When a current of $5$ A flow in the primary coil then the flux linked with the secondary coil is $200$ Weber. The value of coefficient of mutual induction will be

The value of coefficient of mutual induction for the arrangement of two coils shown in the figure will be :

Two circuits have mutual inductance of  $0.09\mathrm{H}$. Average e.m.f. induced in the secondary circuit by a change of current from $0$to $20 \mathrm{A}$in  $0.006\mathrm{s}$ in primary circuit will be

On what factors, mutual inductance between two coils depends.

Write the energy density formula in the case of a magnetic field or inductor.

The magnetic energy per unit volume is

The physical quantity which is measured in the unit of $\mathrm{Wb} {\mathrm{A}}^{-1}$ is

In an electromagnetic wave, the average energy density associated with the magnetic field will be

Current flowing through a solenoid having inductance $2 \mathrm{mH}$ is $4 \mathrm{A}$. Find the energy stored in the solenoid.