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範例:電阻電功率

一導線兩端的電位差為30伏特,電流為2.5安培,試求: (1)電功率? (2)10分鐘之久電流所作的功?


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Posted in 電功率與電流熱效應.

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By admin – 2009 年 12 月 19 日

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