Ring Magnets vs. Disk Magnets: Which Creates Stronger Eddy Currents?

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Ring magnets and disk magnets exhibit different behaviors when dropped through a copper tube, affecting the strength and density of the magnetic field and the resulting eddy currents. The dynamics of field lines play a crucial role in effective induction, with rotating disk magnets generating a non-zero charge distribution, unlike rotating ring magnets which remain uncharged. This difference influences the rate at which each type of magnet falls through the tube, with implications for their respective eddy current generation. The discussion emphasizes the importance of understanding these dynamics to determine which magnet creates stronger eddy currents. Overall, the characteristics of the magnet shape significantly impact their interaction with conductive materials.
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Is there a strength and/or field density difference between ring and disk magnets? I want to know which would create stronger eddy currents when dropped through a copper tube (which one would fall slower).
 
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what i am asking about is are there field line dynamics that can affect the effective induction.
 
robhlee said:
what i am asking about is are there field line dynamics that can affect the effective induction.
A current carrying ring does not behave the same as a disk magnet in all curcumstances. For example, if the current carrying ring is rotating then the ring will remain uncharged. However when a disk magnetc is rotating then the disk will have a non-zero charge distribution, although the net charge will remain the same. See proof I wrote and paced on my website at - http://www.geocities.com/physics_world/em/rotating_magnet.htm

Good luck

Pete
 
i am not sure if you got this, but what i meant was ring magnets vs. disk magnets. (dropped through pipe)
 
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