Energy Density in Magnetic Field

The ratio of energy stored per unit volume in a solenoid having magnetic induction $B$ to the electrostatic energy stored per unit volume in a capacitor in elcctric field $E$ is

For a long current carrying solenoid having inside magnetic field is $0.6 \mathrm{T}$. Find the magnetic energy per unit volume.

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

A long solenoid with 40 turns per cm carries a current of 1A. The magnetic energy stored per unit volume is _____$\raisebox{1ex}{$\mathrm{\pi } J$}\!\left/ \!\raisebox{-1ex}{$m^3$}\right.$
 .
 

By inserting a soft iron piece into a solenoid, strength of the magnetic field

A current of 2A flows through a solenoid of self-inductance of 3 mH. the energy stored in the solenoid will be-

A solenoid of inductance 2H carries a current of 1A. What is the magnetic energy stored in a solenoid?
 

The expression for the energy density in the magnetic field is given by,

$u=\frac{1}{2}\frac{B^2}{{\mu }_0}$

Where, the value of ${\mu }_0$ is $8.85\times {10}^{-12} \mathrm{F}/\mathrm{m}$.

The magnetic field stored per unit volume is $\mathrm{nBH} \mathrm{J}/{\mathrm{m}}^3$. Here the value of $n$ is ?

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

The magnetic energy per unit volume is

Electromagnetic induction occurs in a wire when a change occurs in _____ in wire;

Electro magnetic induction is a phenomenon of production of electric current in a coil, when the magnetic flux linked with the coil is changed.

The flux linked with a coil at any instant $t$ is given by: $\varphi = 2t^2–t+1$. The magnitude of induced emf at $t=3$ $\sec$ is.

The electric current flowing in a wire in the direction from B to A is decreasing. Find out the direction of the induced current in the metallic loop kept above the wire as shown.

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.

Magnetic energy stored in the solenoid in the terms of magnetic field $B$, area $A$ and length $L$ of the solenoid.

Cotyledons are also called-