What will be the maximum magnetic strength to which a piece of ferromagnetic substance can be magnetised?

What will the maximum strength possible for a piece of iron?

How would the shape of the ferromagnetic substance affect this strength?

What would be the current needed in the solenoid if this strength is to be achieved?


Question: Photoshop/Illustrator: generate vector graphic from bitmap
Answer: Since you're using Illustrator then use the tools built into it for doing exactly what you're doing. But if you don't have / want to use the Adobe software there are several free alternatives:

Potrace is Free (as in FOSS) vectorisation software, these days it comes as a plugin for the free vector graphics package Inkscape

The brilliant commercial / open source vector graphics package Xara is available free for Linux, it has an excellent built-in tracing tool (and it kicks illustrator's 4rse for speed and ease of use)

Other free vectorisation software includes AutoTrace and Deliniate.

Also there's a free web app called vector magic here, they sell a desktop version as well.

-stib