Magnets Strength: What Physical Property Determines It?

[duoheer]

If the size of a magnet does not determin its strength, then what physical property does? THANX

 

[Azael]

do you mean a ferromagnet or electromagnet?

a ferromagnets strenght is determined by the material. Simplified, the more unpaired electrons in the material the stronger magnetic field it has. The atoms has to be fairly alinged as well so the magnetic dipol moments add up instead of cancel each other.

Offcourse if you have 2 magnets of the same material the bigger magnet will be the stronger.
Here is a link I think you will find interesting
http://en.wikipedia.org/wiki/Ferromagnetism

A electromagnets strenght is determined by the current you run through it.
http://en.wikipedia.org/wiki/Electromagnet

 

[astrokreng]

The strength of a magnet is determined by its magnetic moment, which is a measure of the magnet's ability to attract or repel other objects. This property is dependent on the material the magnet is made of, as well as its shape and alignment of its magnetic domains. Other factors that can affect the strength of a magnet include the strength of the magnetic field it is exposed to, the temperature, and any external magnetic fields that may be present. It is important to note that the size of a magnet can still play a role in its strength, as a larger magnet may have a larger magnetic moment due to a greater number of aligned magnetic domains. However, the size alone is not the determining factor. Thank you for your question.