(a) Obtain the expression for the magnetic energy stored in a solenoid in terms of magnetic field B, area A and length l of the solenoid. (b) How does this magnetic energy compare with the electrostatic energy stored in a capacitor?

Derive the expression for the magnetic energy stored in a solenoid in terms of magnetic field B, area A and length l of the solenoid carrying a steady current 1. How does this magnetic energy per unit volume compare with the electrostatic energy density stored in a parallel plate capacitor ?

The total electrostatic energy stored in both the capacitor is

In the figure magnetic energy stored in the coil is

Strating from the expression for the energy W=(1)/(2)LI^(2) , stored in a solenoid of self-inductance L to build up the current I, obtain the expression for the magnetic energy in terms of the magnetic field B, area A and length l, of the solenoid having n number of turns per unit length. Hence show that the energy density is given by B^(2)//2mu_(o) .

The magnetic energy stored in a long solenoid of area of cross-section A in a small region of length L is

The total electrostatic energy stored in both the capacitors ("in "muJ) is

Deduce an expression for the potential energy stored in a parallel plate capacitor.

A 12 pF capacitor is connected to a 50 V battery. How much electrostatic energy is stored in the capacitor ?

The expression for magnetic induction inside a solenoid of length L carrying a current I and having N number of turns is

The magnetic field along the axis of an air cored solenoid is B. The magnetic field energy density is