constructing a uniform magnetic field with a transformer from a rhumkorf generator?

hello thank you for reading this question, i have a iron cored dc-ac transformer (relies on interrupter to constantly break circuit to induce induction in secondary coil) a brief and crude diagram can be found here:http://img684.imageshack.us/img684/990/induct.jpg. What i wish to do with this extracted component from an inductorium is use it to create a magnetic [...]

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