Does the strength of an electric field in a wire change with shape?

AI Thread Summary
The strength of an electric field around a charged wire can vary with its shape, but primarily depends on the proximity of charges rather than the specific configuration. When a long charged wire is coiled into a spiral, the electric field strength near the wire may increase due to the charges being closer together. However, the overall effect of the spiral shape on the electric field strength is not straightforward and can lead to both stronger and weaker fields at different points. The key factor influencing the electric field is the distribution and density of the charge rather than the wire's shape itself. Understanding these principles is essential for analyzing electric fields in various configurations.
pghazanfari
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If I have a charged wire and shape it into a spiral, is the electric field stronger?
 
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Maybe at some points, maybe weaker at some points.

Sometimes its helpful to consider extreme cases. If I have a very long charged wire that extends for miles, then I spiral it up into a small package the field near by should be stronger, right? But that doesn't really depend on the fact that its spiraled, only that the charges are now closer together.

What is your line of thinking here?
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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