Change in flux of a transformer

AI Thread Summary
A transformer operates by using alternating current (AC) in the primary coil to create a magnetic field in the iron core, which induces an AC voltage in the secondary coil. The change in voltage is determined by the turns ratio of the coils, where the voltage increase or decrease corresponds to the ratio of the number of turns in the primary and secondary coils. The discussion highlights the need for a clearer understanding of this voltage transformation process. A link to a Wikipedia article on the induction law is provided for further clarification. Understanding the relationship between coil turns and voltage is essential for grasping transformer functionality.
AbsoluteZer0
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Hello,

As I understand, a simple transformer works by using the Input AC in the primary coil to generate magnetic field in the iron core, which then generates an AC in the secondary coil. My question is: how does this process change the voltage? I've searched for answers on other websites but I haven't found a clear explanation.

Thanks,
 
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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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