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如圖,一長直導線上的電流i為at(a>0),t表時間。當此電流向下流時,在其左方的封閉迴路內(a)感應電流 (b)所受的磁力合力,性質各為何?[82夜大]
[詳解]
Posted in 歷屆物理考題, 電磁感應與冷次定律.
Tagged with 82夜大, 冷次定律, 感應電流, 磁力.
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By admin – 2010 年 03 月 26 日
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