Electromagnet attracting permas

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    Electromagnet
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Discussion Overview

The discussion revolves around the behavior of a weak electromagnet in relation to a small permanent magnet, specifically why both poles of the permanent magnet are attracted to the same side of the electromagnet. Participants explore the implications of this observation and the potential for creating electromagnets with non-ferrous cores.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant notes that the attraction of both sides of the permanent magnet to the same side of the electromagnet is interesting, especially if the permanent magnet is stronger than the weak electromagnet.
  • Another participant suggests that the behavior may be due to the electromagnet having an iron core, which could be inducing its own magnetic field due to the presence of the permanent magnet.
  • A participant questions whether it is possible to create an electromagnet with a non-ferrous core that still has a defined magnetic field shape and some strength.
  • Another response indicates that creating a strong enough electromagnet without an iron core could be feasible.

Areas of Agreement / Disagreement

Participants express varying views on the implications of the observed behavior of the electromagnet and the permanent magnet, with some agreeing on the role of the iron core while others explore alternatives without reaching a consensus.

Contextual Notes

There is an assumption that the strength of the electromagnet and the nature of the core material significantly influence the magnetic interactions, but these factors are not fully resolved in the discussion.

Shortyski13
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I wired a quick weak electromagnet. How come when I put a small permanent magnet close to it, both sides of the permanent magnet (north and south) are attracted to the same side of the electromagnet?
 
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Hi and welcome
What you saw was a bit hard to understand. If, indeed, the electromagnet was weak and the small permanent magnet was comparatively stronger then your result was interesting but not too uncommon.
The result you got, implies to me that the electromagnet must have an Iron core and your small permanent magnet was inducing its own field in the electromagnet (iron) core. It was attracting it just the same as it would if the electromagnet were turned off (possibly with a bit less force in on orientation).
 
This is what I was thinking was happening. Which leads me to another question, if that is the case: can I make an electromagnet with a non -ferrous core and still have a defined magnetic field shape and still some strength to it?
 
I think that would be ok as long as you could make a strong enough electromagnet without an iron core.
 

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