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範例:電阻串並聯與電功率[86日大]

如圖所示的電路中，若R3量值減少，則下列敘述何者為正確? (A)a,b間的電位差量值減少。(B)電源輸出之功率減少。(C)通過R1的電流量減少。(D)通過R2的電流量減少。(E)通過R3的電流量減少。


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Posted in 歷屆物理考題, 電功率與電流熱效應.

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By admin – 2009 年 12 月 22 日

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