04電池作用02電磁鐵(是非03)
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63.              通電的電磁鐵 N 極會吸引磁鐵 S 極,所以電磁鐵的 S 極也會吸引 N 極。

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67.               電磁鐵通電後和磁鐵一樣,都具有 N 極和 S 極,且一樣會同極相斥、異極相吸。

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