a problem of electromagnetism

kolndom
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Joined: Tue Oct 25, 2005 11:29 am

a problem of electromagnetism

Postby kolndom » Wed Oct 26, 2005 6:05 am

The inductor is formed by winding wire N times around a toroidal piece of iron of permeability . The major radius of the toroid is R and the minor radius is a, with a << R. What is the inductance if this inductor?

thank u in ad :)



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