[題目] 電磁學
[領域] 電磁學(Image method?) (題目相關領域)
[來源] 課本習題 (課本習題、考古題、參考書...)
[題目] A straight conducting wire of redius a is parellel to and at height h
from the earth. Assuming that the earth is perfectly conducting, determine
the capacitance and the force per unit length between the wire and the earth.
[瓶頸] (寫寫自己的想法，方便大家為你解答)
1.題目中的地球該假設成球面或者是無限大的平面呢?
假如是平面的話好像會有一系列無限多個image charge?
如果是球面的話又不知道該怎樣假設image charge的位置和形狀~
麻煩板上高手解答了~謝謝
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