m******e
发帖数: 44 | 1 Assume a straight cylindrical wire conductor of infinite length, carries a
DC current $J_0$, what do the electric and magnetic fields look like inside
and outside the straight wire? what if the current is a AC current(Should I
take care of the AC current distribution in the wire?Considering the
electrical field could not penetrate conductor in high frequency, with Ohm's
law, the current will not be uniform.)? Assume conduction $\sigma$,
permeability $\mu$ both finite. I am not sure if my results | ET
发帖数: 10701 | 2 这个大学物理应该告诉答案了吧？
inside
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【在 m******e 的大作中提到】
: Assume a straight cylindrical wire conductor of infinite length, carries a
: DC current $J_0$, what do the electric and magnetic fields look like inside
: and outside the straight wire? what if the current is a AC current(Should I
: take care of the AC current distribution in the wire?Considering the
: electrical field could not penetrate conductor in high frequency, with Ohm's
: law, the current will not be uniform.)? Assume conduction $\sigma$,
: permeability $\mu$ both finite. I am not sure if my results
| m******e
发帖数: 44 | 3 忘光了，数学上我没有问题，就是不知道物理上是不是make sense， 特别是交流电流
的情况，假如总的电流为$I_0$, 不知道是不是还要求解电流在横截面上的分布情况，
再来解磁场和电场。
【在 ET 的大作中提到】
: 这个大学物理应该告诉答案了吧？
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: inside
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: 's
: from
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