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範例:電阻串並聯與電池內電阻

如圖所示,電池之電動勢ε=12V,內電阻r=1Ω,電阻器之電阻R1=1Ω;R2=2Ω;R3=3Ω; R4=4Ω,則(1)此線路的總電阻為多少Ω? (2)流經R3的電流為若干安培? (3) R2消耗的電功率為若干瓦特? (4)電池之端電壓為多少V?【中一中】


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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 22 日

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