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範例:荷電連續體的電場與簡諧運動

一半徑為a之金屬圓環，均勻荷+Q之電量，則：(1)其圓環軸心上與圓環中心相距r處之電場大小為何? (2)若r >> a，則(1)之結果為何? (3)若r << a，且在該處置一質量m電量為-q之質點，釋放後其作S.H.M.之週期為若干? (4)環心上之電場為若干?


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Posted in 電場與電力線.

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By admin – 2010 年 03 月 01 日

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