Placement of Magnet in Simple Induction

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SUMMARY

The discussion centers on the efficiency of inducing voltage in a coil using a magnet, specifically whether a magnet must pass through the center of the windings or if a sleeve-like magnet can be used. It is established that to induce a current, the magnetic flux must change, which can occur through various movements of the magnet. The most significant change in magnetic flux happens when the magnet moves inside the coil. Additionally, transferring magnetic flux changes through a conducting core within the coil is also effective.

PREREQUISITES
  • Understanding of magnetic flux and its measurement (Tesla, Gauss)
  • Basic principles of electromagnetic induction
  • Familiarity with coil windings and their configurations
  • Knowledge of conducting materials and their properties
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  • Explore the effects of different magnet configurations on induced voltage
  • Learn about the role of conducting cores in enhancing magnetic flux
  • Investigate practical applications of induction in electrical engineering
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Syed F. Karim
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In order to induce a voltage in a coil, is a magnet reqired to pass through the middle of the windings? So the real question is, if I have a tube-like or sleeve-like magnet, can I pass the windings through the inside of the magnet and still induce a current? Are both ways essentially the same, or is one more efficient than the other?
 
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Greetings !

Welcome to PF Karim ! :smile:

In order to induce a current in a conducting coil
the magnetic flux, which is basically the magnetic field
per area (<Tesla> or <Gauss> / <ft^2> or <m^2> ), must change.
Now you can move the magnet in any way near the coil
but the most "drastic" change in the magnetic flux
will ussualy occur if the magnet is moving inside the coil.

Of course, you can also "transfer" the magnetic flux
change which occurs when you move the magnet "through" a
conducting core extending inside the coil.

Live long and prosper.
 

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