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Results tagged with electromagnetism
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user 247795
The classical theory of electric and magnetic fields, both in the static and dynamic case. It also covers general questions about magnets, electric attraction/repulsion, etc. Distinct from electrical-engineering.
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How to prove that a field has cylindrical symmetry
I'll answer it in the context of a PDE. If you have a PDE,
$$Lu=f,$$
where $u$ is the solution and $f$ is the source.
To check if your problem has cylindrical symmetry, you check if $u(x)$ is a soluti …
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1
vote
Describing a circular current loop as delta functions
The following is a systematic way of obtaining the desired description for the current in the wire.
In order to represent the current, we must make use of the azimuthal symmetry to reduce the problem …
- 51
1
vote
Coulomb gauge or London gauge in superconductivity?
$\textbf{div} A=0$ does not fix the gauge. We need boundary conditions.
The London gauge says $A.n=0$ on $\partial\Omega$ where $\Omega$ is the domain of the material under analysis. Check "Supercond …
- 51