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範例:多質點電荷的電位(能)與電場

正三角形ABC，各角上分別有+q、+q、-q之電荷三角形邊長為a，下列何者正確? (A)A點電位為零 (B)此系統電力位能為Kq2/a(C)若在三角重心處有一電荷-Q則-Q所受靜電力為6KQq/a2(D)若要將此-Q移至無窮遠處須作功 (E)承(C)將-Q移至無窮遠處不需作功。[89高聯]


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Posted in 電位能與電位.

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By admin – 2010 年 03 月 09 日

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