Electromagnetization

Process of generating permanent electromagnet from a magnetic material placed inside circular loops of the magnetic coil

Magnetic field intensity

${\displaystyle B=LI={\frac {N\mu }{l}}I}$

Magnetization field intensity

${\displaystyle H={\frac {B}{\mu }}={\frac {\phi }{N\mu }}}$

Maxwell's Electromagnetization Vector Equation

${\displaystyle \nabla \cdot D=\rho }$
${\displaystyle \nabla \times E=-\nabla B}$
${\displaystyle \nabla \cdot B=0}$
${\displaystyle \nabla \times H=J+\nabla B}$