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April 20, 2014

April 20, 2014

Posted by **Sandhya** on Sunday, October 12, 2008 at 5:40am.

r<a, a<r<b, b<r<c, c<r

- physics -
**drwls**, Sunday, October 12, 2008 at 7:57amYou need to apply Ampere's law, which for a cylindrical geometry takes the form

B = uo I/(2 pi r)

Where uo is the permeability of free space and I is the total current inside radius r. Apply it in all regions. Assume the current is uniformly distributed in the inner and outer conductors.

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