, . 1-3 (. 1.15), , I.
- . . 2 1 : . I . 3 2, .. .
, :
(1.15)
(1.16)
, :
(1.17)
, :
, (1.18)
, . .
(1.16) , , .
, (. 1.17).
(. 1.17, )
(. 1.17, )
, :
(1.19)
, U J J .
(1.20)
m .
, , , , . , (. . 1.2)
I − I 1− I 2=0.
(1.21)
n ;
m Rk ;
Uk = RkIk k - .
(. 1.2) :
E = UR + U 1.
, : ,
(1.22)
:
1) , ;
2) , ;
3) , , , , , , , .
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II (. 1.2):
I: E = RI + R 1 I 1+ r 0 I,
II: R 1 I 1+ R 2 I 2=0,
III: E = RI + R 2 I 2+ r 0 I.
. R t I
W = I 2 Rt. (1.23)
. (1.24)
, , .
. (1.25)
(1.25) . , , , EI (1.25) . , , EI (1.25) . , . 1.2 :
EI = I 2(r 0+ R)+ I 12 R 1+ I 22 R 2.
. (), (), (), (), - (-) ()
: (1 A = 103 ), (1 A = 103 ), (1 = 103 ), (1 = 103 ), (1 = 103 ), (1 = 106 ), (1 = 103 ), - (1 - = 103 -).
. -, , , . R:
(1.26)
- , ,
(1.27)
[] [] .
, , . (1.24)
(1.28)
(1.28), , , .
, , , :
(1.29)
:
. (1.30)
, , . , , +, (. 1.18.).
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. (1.31)
, .