[討論] 基本電學 求解
http://imgur.com/a/RhIAO
如圖所示電路，當開關S閉合後，3歐姆電阻器的電壓從7.2V降為6V，則電阻器R的電阻值
為多少？
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推
08/02 14:58, , 1F
08/02 14:58, 1F
→
08/02 15:00, , 2F
08/02 15:00, 2F
→
08/02 15:00, , 3F
08/02 15:00, 3F
推
08/02 17:33, , 4F
08/02 17:33, 4F
推
08/02 20:18, , 5F
08/02 20:18, 5F
→
08/02 20:18, , 6F
08/02 20:18, 6F
→
08/02 20:46, , 7F
08/02 20:46, 7F
推
08/02 21:23, , 8F
08/02 21:23, 8F
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