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GCSE科學/電學多項選擇練習題8 答案1
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來自維基文庫，一個開放世界的開放書籍
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GCSE科學
抱歉，這是錯誤的答案。
根據歐姆定律
R=V/I
但V/I也是圖中線上面的
斜率
（或
梯度
）。因此對於一個恆定的斜率，我們必須有一個恆定的電阻。
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書籍：GCSE科學
華夏公益教科書
