試求圖2-33中各電路的等效電阻Rab
試求圖2-33中各電路的等效電阻Rab
兩個(gè)2.2和2.4
兩個(gè)2.2和2.4
物理人氣：407 ℃時(shí)間：2020-05-08 22:17:04
優(yōu)質(zhì)解答
2-35 (b) 綠圈是三角電阻網(wǎng)絡(luò),可以轉(zhuǎn)換到星形網(wǎng)路,Rb= (Rbc x Rbd) / ( Rbd + Rbc + Rcd) = 60x60/ (60+60+40)=3600/160=90/4 ΩRc=2400/160 = 15ΩRd=2400/160 = 15ΩRab = Rb + (Rc+20)//(Rd+20) ...
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