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範例:靜電感應與庫侖定律[89學測]

一個輕而未帶電的金屬小球乙,用一絕緣線懸掛著,如圖16 所示。若將一帶電的金屬球甲靠近乙,則下列敘述何者正確? (A)乙先被甲排斥,然後被甲吸引與甲接觸 (B)乙被甲吸引,然後一直保持與甲接觸 (C)乙先被甲吸引接觸甲,然後被甲排斥離開甲 (D)乙被甲排斥,不可能碰觸甲 (E)乙不受影響,保持不動。[89學測]

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Posted in 歷屆學測(推甄)考題, 歷屆學測試題, 電力與磁力.

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