, .
. , .
.
.20 , R1, R2,,Rn. I. U1, U2,, Un.
.20. .
U=U1+U2++Un= IR1+IR2++IRn=I (R1+R2+Rn)=IR. (23)
.
.
.21 , n G1, G2,, Gn. U, .
.21. ( ).
I=I1+I2++In=G1U+G2U++GnU=U (G1+G2++Gn)=UG. (24)
,
.
(n=2) , .
:
.
.
.22 :
.22. .
. . .22 e-A. R5 R6 ,
(.23).
.23
R3, R4 R/. , c-e-f-d :
R.=R3+ R/.+R4.
.24.
.24
c-d R1. :
.
(.25) . , U I .
.25
.
, , , , .
|
|
.., , , , .
.26. .
R12; R23; R31- ;
R1; R2; R3- ;
I12; I23; I31- ;
I1; I2; I3- , 1, 2, 3.
I1, I2, I3.
:
I12R12+I23R23+I31R31=0
1 2
I31=I12-I1; I23=I12+I2
I12 :
1 2 :
:
U12=I1R1-I2R2.
.. , , ..
:
(25)
.
(25) :
, , .
1-2 I1 I2. :