問題詳情
22. 線圈內部感應電流所產生的磁場方向為向上的是何者？
(A)甲、乙
(B)乙、丙
(C)甲、丁
(D)丙、丁。
(A)甲、乙
(B)乙、丙
(C)甲、丁
(D)丙、丁。
參考答案
無參考答案
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