Positive SSL
    14.素養(4)
1 如圖所示, 求RAB
A 0.45Ω
B 0.25Ω
C
D

電橋平衡,中間一堆電阻都可拿掉

RAB = (1Ω+2Ω)//(2Ω+4Ω) = 3 // 6 = 2Ω