Question

can some one please tell me that what is the meaning of this equation?
http://puu.sh/nkSXN.png

Answer 1

See: https://en.wikipedia.org/wiki/Permeability_%28electromagnetism%29

Answer 2

i mean that what is the difference betwwen b and h.?

Answer 3

such equation is used in order to express the magnetic field inside the matter. The new vector field \(\mathbf{H}\) hs an important property:
\[\Large {\text{rot }}{\mathbf{H}} = \frac{{4\pi }}{c}{{\mathbf{J}}_{free}}\]
where:
\[\Large {{\mathbf{J}}_{free}}\]
is the current density of non-magnetization current, namely is the current density generated by an external source of voltage
Of course, such property doesn't holfd for the magnetic field \(\mathbf{B}\)
furthermore, the coefficient \(\mu\) is the magnetic permeability of the matter.

Answer 4

thank you for replying. Michele , i have almost no or very little knowledge about these concepts.
can you please guide me that from where can i study and digest this theory from the very basics.