Are these instances of identical magnetic fields?

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SUMMARY

The discussion centers on the comparison between magnetic fields generated by an electromagnet, powered by a current spike from a charged capacitor, and those produced by a rotating permanent magnet. It concludes that both can be considered instances of time-varying magnetic fields, with the rotating permanent magnet potentially inducing eddy currents depending on its rotation dynamics. The interaction between these two types of magnetic fields raises questions about their behavior and effects on nearby conductive materials.

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pager48
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Are both magnetic fields emanated from an electromagnet fed with a current spike from a charge capacitor and a rotating static magnetic field from permanent magnets instances of time varying fields?

The permanent magnet would be attached to perhaps some rotating disc thus passing over a target were as an electromagnet can stay over the target and is a magnet only when the capacitor discharges thru it. Does the rotating permanent magnet induce eddy currents?
 
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How can it be rotating and static at the same time?
pager48 said:
Does the rotating permanent magnet induce eddy currents?
It depends on how it rotates, in general yes.
 

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