Electric field for radially polarized coil

[Jdo300]

Hello All,

A while back, I created a document describing how one could create a radially polarized electromagnet (like a doughnut with the North pole in the center and the south pole on the outer edge) and I would like to know what the e-field would look like when the current is increasing in the coil.

It is easy to visualize the E field for a cylindrical coil with a changing magnet field but I'm having a hard time visualizing the vectors for the radial coil. In case this helps, I have attached the article I made about the coils.

Thanks,
Jason O

 

[Evalesco]

Hi Jason,

It sounds like a fascinating project you have been working on. I'm not sure about the exact answer to your question but perhaps someone on the forum can give you some useful insights. I suggest posting a link to your article for others to review and see if they can help out. Good luck with your project!

 

[astrokreng]

.

Hello Jason,

Thank you for sharing your article on creating a radially polarized electromagnet. The electric field for a radially polarized coil would be quite different from a cylindrical coil with a changing magnetic field. This is because the magnetic field lines in a radially polarized coil are perpendicular to the axis of the coil, whereas in a cylindrical coil they are parallel to the axis.

To visualize the electric field, we can use Gauss's law, which states that the electric field is proportional to the charge enclosed by a closed surface. In this case, the charge is the current flowing through the coil. As the current increases, the charge enclosed also increases, resulting in a stronger electric field.

The electric field lines in a radially polarized coil would be radial, originating from the center of the coil and extending outwards towards the outer edge. The strength of the electric field would be strongest at the center of the coil and decrease as we move towards the outer edge. This is because the magnetic field lines, which are perpendicular to the electric field lines, are strongest at the center and decrease towards the outer edge.

I hope this helps with visualizing the electric field for a radially polarized coil. Please feel free to ask any further questions or provide any additional information. Best of luck with your research!