Can Gauss's Law Derive the Electric Field Around a Uniformly Charged Ring?

LAByrinthAC
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Hey guys can we derive the formula of Electric Field Intensity around a uniformly charged ring if yes please share the derivation thanks
 
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Hi LAByrinthAC and welcome to PF.

No we cannot because the symmetry is not high enough.
 
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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