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U=E-Ir U=E+Ir U=-E-Ir U=-E+Ir
EI=UI+Ir EI=UI-Ir EI=UI+I2r EI=UI-I2r
1.9Ir 1.6Irr 1.5Ir 1.25Ir
∑(IR)=0 ∑I=0 ∑(IR)=∑E ∑(IR+E.=0 节点上电流的代数和等于零
I prefer not I prefer not to I prefer to not I wouldn't prefer
a; the the; the the; \ \; \
Ir=0.01I+I0 Ir=(1.0~1.25)I Ir=(1.0~1.25)I+I0 Ir=(1.25~1.5)I+I0
ΣI 入=ΣI 出 ΣE=ΣIR U=IR E=I(R+r)
U=I(R+r) U=E+IR U=IR U=E+Ir
wood, wood wooden, wood wooden, wooden wood, wooden
IR1/(R1+R2) IR2/(R1+R2) I1+I2 I1-I2
ΣI 入=ΣI 出 ΣE=ΣIR U=IR E=I(R+r)