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範例:電流磁效應與螺線管[92學測補考]

下圖所示為一馬蹄型電磁鐵,下列有關此電磁鐵之敘述, 何者正確?(A) 若電磁鐵僅一邊繞有線圈, 則另一邊不會出現磁極(B) 電池的總電壓愈大, 兩磁極的磁場就愈強(C) 電磁鐵的甲磁極為N 極, 乙磁極為S 極(D) 電磁鐵的甲磁極、乙磁極都是N 極。[92學測補考]

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Posted in 歷屆學測(推甄)考題, 歷屆學測試題, 電流產生的磁場, 電流磁效應.

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