msvr12-013 msvr12-012 msvr12-011 msvr12-010 msvr12-009 msvr12-008 msvr12-007 msvr12-006 msvr12-005 msvr12-004 msvr12-003 msvr12-002 msvr12-001 2011 Acknowledgments Glossary Download PDF Save Add to Collections Add to Plan ...
bR 10ΩR_(21)2Ωd+70VUs245VR12 10ΩR223Ω图1-68 相关知识点: 试题来源: 解析 【解析】解:在图上标注各支路电流方向,插入a、b、c、d四点,选定两个回路(两个网孔),标注回路绕行方向。列a结点的 KCL:I^2+I_2=I_31在acba回路中: (I_3R_3)+(I_1R_(12))+(-U_(21))+(I_1R_(...