断开10Ω电阻两端,上端为a,下端为b,24V电源负极为参考点0V:Ua=24*12/18=16V Ub=24*3/9=8V E=Uab=16-8=8Vr=6*12/(6+12)+6*3/(6+3)=6ΩIR=E/(R+r)=8/(10+6)=0.5A断开4Ω电阻两端,左端为a,右端为b,4V电源负极为参考点0...
断开10Ω电阻两端,上端为a,下端为b,24V电源负极为参考点0V:Ua=24*12/18=16V Ub=24*3/9=8V E=Uab=16-8=8Vr=6*12/(6+12)+6*3/(6+3)=6ΩIR=E/(R+r)=8/(10+6)=0.5A断开4Ω电阻两端,左端为a,右端为b,4V电源负极为参考点0...