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範例:電阻定律與歐姆定律

(1)以固定電流通過一長L之均勻導線,其兩端電位差為V1;若將該導線均勻拉成3L長,其兩端電位差為V2。則V2為V1的幾倍?(2)上題中,導線中電場之大小,拉長後變為原來之幾倍?


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Posted in 電阻與歐姆定律.

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By admin – 2009 年 12 月 18 日

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