Need help with iron solenoid/core for an electromagnet?

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    Electromagnet Iron
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Discussion Overview

The discussion revolves around the construction of an electromagnet using a battery, copper wire, and an iron core. Participants explore the effectiveness of using a magnetic spoon versus a magnetic nail as the core material and provide insights on factors influencing the electromagnet's performance.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the feasibility of using a magnetic spoon as a core for an electromagnet, questioning whether it will function effectively.
  • Another participant confirms that an electromagnet will be created once current flows, suggesting checking the resistance to estimate the current and magnetic field strength.
  • A suggestion is made that tighter and more numerous wire windings will enhance the strength of the magnetic field produced by the electromagnet.
  • A different perspective is offered regarding the core material, recommending the use of soft iron from an old transformer instead of common iron or steel, which may retain magnetization after current is removed.

Areas of Agreement / Disagreement

Participants express varying opinions on the best core material for the electromagnet, with some supporting the use of a magnetic spoon while others advocate for soft iron from transformers. The discussion remains unresolved regarding the optimal choice of core material.

Contextual Notes

Participants do not specify the exact performance expectations for the electromagnet, leading to ambiguity in what constitutes "working." There is also no consensus on the best core material, highlighting differing views on the properties of iron versus steel.

mrphaam
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i'm making an electromagnet with a battery, some copper wire, and a iron solenoid/core. For the core I'm using is a magnetic spoon, i was just wondering, will it work?

here's a picture, http://img706.imageshack.us/img706/9348/spoont.jpg , I'm not done wrapping the wire

basically it's either the spoon, or a magnetic nail the size of my finger
 
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Welcome to PF;
You will certainly have an electromagnet once the current is going - you may want to check the resistance to see what sort of current to expect. That will give you an idea of the likely magnetic field.

Apart from that, it depends on what you mean by "work": what do you hope it will do?
 
A quick hint: the more you wind it, and the tighter you wind it, the stronger the magnetic field will be.
 
If you want to make a good electromagnet, you can't beat the iron fomer you can get out of an old chuckout transformer. A bit of a struggle to strip it apart but it could be well worth the effort.
Most of the 'iron' you find around the place is, in fact, steel, which tends to stay magnetised once you turn off the current and you may not want that. Transformers have 'soft iron' which is just what you want.
 

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