[理工] [電磁]傳輸線

看板Grad-ProbAsk作者big1p (biglp)時間14年前 (2012/01/25 12:08)推噓3(3推 0噓 4→)

留言7則, 3人參與討論串1/4 (看更多)

A transmission line in free space with permeability μo consists of two long parallel conducting wires of radius b. The axes of the wires are separated by a distance D, which is much larger than b. If the two wires carry currents of magnitude I in opposite directions, find in detail the expression for the force per unit length between the two parallel wires. 我的問題是此雙線傳輸線的受力為斥力還是吸力 ? 受力公式裡面有 ▽ L，所以為斥力嗎 ? 還是直接看電流反相所以為斥力但是依據受力公式，斥力或吸力是由所在環境以及此傳輸線的材料和距離決定故不管電流同相反相，此題都為斥力嗎 ? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 111.249.156.82 ※ 編輯: big1p 來自: 111.249.156.82 (01/25 12:09)

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AUOleader

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big1p

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