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Energy stored in an inductor is considered one the most difficult concept.
8 Questions around this concept.
A long conductor carrying a current
is held perpendicular to a magnetic field
. The mechanical power required to move the conductor with a speed of
is:
A current of 1 A through a coil of inductance of 200 mH is increasing at a rate of . The energy stored in the inductor per second is:
Shown in the figure is a parallel R, L, C circuit with key K1 closed and K2 opened. When K1 is opened and K2 is closed simultaneously , The maximum charge stored in it is:
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Energy stored in an inductor (U)-
In building a steady current in the circuit, the source emf has to do work against of self-inductance of the coil and whatever energy
consumed for this work stored in the magnetic field of coil this energy called as magnetic potential energy (U) of the coil.
When an electric current i is flowing in an inductor, there is energy stored in the magnetic field. Considering a pure inductor L, the instantaneous power which must be supplied to initiate the current in the inductor is
The work done by the voltage source during a time interval is
total work done in establishing the final current
in the inductor
So Energy stored in the magnetic field of the inductor is given as
The energy density (u)/Energy per unit volume-
using
for the solenoid field, we can write
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