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Name: Andrew
Status: student
Grade: 9-12
Location: OH
Country: USA
Date: May 2, 2011
Question:
Is there any Limit to the size you can make an electromagnet or if you have a large enough power source and enough insulated wire, can you make a larger one?
Replies:
Andrew

Electromagnets do reach a state called saturation Where all of the little magnetic domains in the iron core are lined up together and additional current can't increase the strength of the magnetic field. Here is a formal on-line explanation:

http://en.wikipedia.org/wiki/Electromagnet

Sincere regards, Mike Stewart

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