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範例:兩載流平行導線與靜力平衡

如圖,AB為一水平導線,其正上方有一段導線CD1.0米,質量為1.0×10-3仟克,其兩端可在鉛直導線上下滑動。兩線串聯通以50安培之電流,則當CD所受重力與磁力平衡時,CDAB之高度為(A)0.5厘米(B)1厘米(C)5厘米(D)10厘米(E)50厘米。[67日大][84雄中]


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Posted in 載流導線在磁場中的磁力.

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