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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 已解決 
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電阻問題小討論 !??
Aug 19th 2013, 05:06

單獨R1情形:   V=I1*R1
兩者串聯:  V=I *(R1+R2)

兩式左邊相等, 所以右邊也相等:  I1 *R1 = I *(R1+R2) 
                                        I1* 較小數= I * 較大數
  所以I1較大, I較小 
  可知:  I <I1
 
則通過R1的電流I1，此時會小於先前的電流!
 

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