/sci/ - Science & Math

[Anonymous No.15168634]

https://photonics101.com/magnetostatics-currents-and-fields/magnetic-field-hollow-wire
>Surprisingly, the field of a hollow wire with constant current is homogeneous. We also find that there is no magnetic field inside the hole if it is exactly at the center of the wire.

http://philsci-archive.pitt.edu/9826/1/PartIIIK.pdf
>A magnetic field B is created and confined within
the solenoid, while the vector potential A will be non-zero everywhere outside the solenoid. The total
magnetic flux through every circuit containing the origin is

>https://waveguide.blog/impedance-skin-effect-implications-high-frequency-circuits/
We’ve seen how circuits behave differently to DC versus high frequency AC. One of the most curious effects is the so-called “skin effect”, which causes alternating currents to flow closer to the surface, rather than through the centre of a conductor, effectively increasing the resistance, since less volume is available for the current to flow through.

https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6876131
[math]l = \frac{1}{c} \times \frac{\delta\psi}{\delta t} + c \nabla \cdot \textbf{A}[/math] is set to zero by choice

Good day Sci,
Is the Magnetic vector potential zero inside a hollow wire?
What happens to this vector potential inside the tube as we skin effect the hollow tubing? What would happen if a conductive fluid, like mercury, were to flow inside that tube?

[Anonymous No.15169131]

>>15168634
based thread, bump.