How much energy is stored in a magnet?
Explanation:
The magnetic field is the area around a magnetic material or a moving electric charge where the force of magnetism acts.
Therefore,
The electromagnet's magnetic field energy is:
, Where, is the energy in Joules, is the inductance in Henries, is the current in Amps
, Where, is the magnetic permeability, is the number of turns of the coil, is the cross-sectional area of the coil, is the effective length of the coil.
So,
Where, is the magnetizing force., is the number of turns., is the effective length of the coil., is the magnetic field.
Therefore,
Hence, this much energy is stored in a magnet.