() , ( ) , , (), ( ) .
1, : I 1 = Ik 1. I 1 = Ik 1 ():
G 11 1, G 12, G 13, , G 1n 1- , I 11 = E 1 G 11 1 E 1, I 12 = E 2 G 12, , I 1n = E n G 1n 1 E 2,, En.
, , , . , P=I 2 ×R.
, . , . , , . .
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. 22 1, . 22 - 2.
. 22 E1:
; I 11 = E 1 /R 11 = 12/3 = 4A; I 21 = I 31 = 2.
. 22 E2:
; I 22 = E 2 /R 22 = 9/3 = 3A; I 12 = I 32 = 1,5.
:
I 1 = I 11 - I 12 = 4 1,5 = 2,5 A
I 2 = - I 21 + I 22 = -2 + 3 =1 A
I 3 = I 31+ I32 = 2 + 1,5 =3,5 A
m n , E ( m). , E, m , n I, E, n , m I (.23).
. :
. 23, . 23.
(Gmn=Gnm), .
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: ) , (E = U) , ) J, (J = I) I.
Rk Ik Uk (. 24). . ) Rk (. 24). , . C a d:
, , .
a d , , a-d . . 24, Rk .
. ) Rk , (. 25).
, . a-c (, . . 25, Rk Jk=Ik.