[問題] 電磁感應
想請問一下如圖
http://ppt.cc/Rhor
左圖中的紅色金屬線圈在黑色帶有均勻磁場的線圈中移動
移動過程中金屬線圈全部都在黑色線圈中
以磁通量不變的觀點不會產生感應電動勢
以切割磁力線的觀點會產生感應電動勢
但是答案是不會產生感應電動勢
右圖中黑色範圍為不斷地旋轉的金屬圓板
以磁通量不變的觀點不會產生感應電動勢
以切割磁力線的觀點會產生感應電動勢
但答案是會產生感應電動勢
想請問一下兩種情況的相異以及相同之處在於甚麼呢?
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◆ From: 203.72.94.126
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※ 編輯: hydrasmith31 來自: 203.72.94.126 (05/28 22:05)
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