(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A long copper rod of radius R has uniformly distributed free current I. Find the value of H inside and outside the rod

2. Relevant equations

∫Hdl=I(free enclosed)

3. The attempt at a solution

Copper is diamagnetic so the magnetization will be circumferential and opposite of B, producing a downwards bound current inside and an upwards bound current on the surface. We can use ampere's law to calculate H:

∫Hdl=I(free enclosed). The path dl is the amperian loop inside, with s<R, so

H(2πs)= I(free enclosed)

How do I find I(free enclosed)? Isn't it just I?

Thanks! If the explanation could be as explicit as possible, that would be great.

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# Homework Help: Magnetized object

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