Parasitics in Solenoids: The Relationship Between AC Frequency and Induced EMF

AI Thread Summary
The discussion focuses on the relationship between AC frequency and the induced EMF in a solenoid placed inside another solenoid with the same number of coils. It highlights the concept of parasitics, which refers to unintended interactions that can affect performance. The induced EMF in the outer solenoid is influenced by the frequency of the AC current flowing through the inner solenoid. Understanding these interactions is crucial for optimizing solenoid design and performance. The conversation emphasizes the importance of frequency in determining the effectiveness of electromagnetic induction in this setup.
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If you have a one solenoid inside another (with the same number of coils of wire) the current is going through the inner one. How does the induced EMF in the outer one depend on the frequency of AC in the inner one
 
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alex_ph said:
If you have a one solenoid inside another (with the same number of coils of wire) the current is going through the inner one. How does the induced EMF in the outer one depend on the frequency of AC in the inner one

Welcome to the PF.

That would come down to parasitics, no?
 
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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