Question

I need help! Someone know what are the restrictions for use Maxwell's equations?

Answer 1

Restrictions?

Answer 2

zero rest mass?

Answer 3

maxwell equation has some limitation , not restrictions

Answer 4

Maxwell equations are UN restricted. They are fundamental equations of classical description of Electromagnetic field. They are holding true everywhere and at any time.
However they do have limitations of applicability:
They are Classical equations. But we know for 100 odd years that the world is fundamentally quantum at very small level of atoms, molecules, photons etc. For the precise description of the fields at quantum level some other theories were developed . However in normal circumstances of uusal dimensions (say from 10 microns and larger) these theories BECOME Maxwell equations it is called - macro - limit of the quantum equations.
Summary: in normal, usuall macroworld Max. is Well always. In the microscopic dimensions some modifications of these are used.

Answer 5

@hiza your q is answered

Answer 6

We show that if Maxwell’s equations are expressed in a form independent of specific units, at least three Galilean limits can be extractedThe electric and magnetic limits can be regarded as nonrelativistic limits because they are obtained using the condition |v| ≪ c and restrictions on the magnitudes of the sources and fields. The third limit is called the instantaneous limit and is introduced by letting c → ∞. The electric and instantaneous limits have the same form, but their interpretation is different because the instantaneous limit cannot be considered as a nonrelativistic limit.
@hiza hope this helps you :)

Answer 7

Thanks @hiza

Answer 8

@hiza didn't you get my point ? or did you?