問題詳情
. 下圖為一馬蹄形電磁鐵，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
(E)電磁鐵的甲磁極、乙磁極都是S極。
(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
(E)電磁鐵的甲磁極、乙磁極都是S極。
參考答案
答案：C[無官方正解]
難度：非常困難0
統計：A(0),B(2),C(4),D(0),E(0)
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