「電磁作用」素養導向的教學，下列哪一個敘述不是「電磁作用」核心概念的教學？(A)電能轉換成磁力能，通電的導線會產生磁力(B)改變線圈圈數可以改變磁力大小(C)改變電流方向可以改變磁極方向(D)指

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31.「電磁作用」素養導向的教學，下列哪一個敘述不是「電磁作用」核心概念的教學？
(A)電能轉換成磁力能，通電的導線會產生磁力
(B)改變線圈圈數可以改變磁力大小
(C)改變電流方向可以改變磁極方向
(D)指北針的磁極會指向南北

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