, (.5.6).
5.6
1 2. , 1 2.
α = (1/W)(dM/dα)I1I2, (5.4)
; I1I2 .
,
α = (1/W)(dM/dα)I1I2cos(φ1 φ2). (5.5)
, , . , .
(.5.7.) (.5.7.). , ( 0,5 ). ( 10 ) .
4.7
) , )
I1 = I2 = I, φ1 φ2 = 0, (4.5)
α = (1/W)(dM/dα)I2, (4.6)
.. d/dα = const α , .
. , dM/dα .
I1 = kI; I2 = kI, .
(.5.8). , R.
α = (1/W)(dM/dα)(U2/R2), (5.7)
R - .
, dM/dα .
5.8
.
, Z, (.5.9).
5.9
I1 , I2 :
I2 = U/(R + r),
R - ; r .
(5.5)
α = (1/W(R + r))(dM/dα) (5.8)
- .
- . .