:
1) , ;
2) ,
3)
.
1 > 2,
, , , .
1 - ; 2 -
.
φ0 = 0
.
φ = φ0 + 1 - I∙Ri1
:
φ = φ - I∙R
.
φ0 = φB - E2 - I∙Ri2
- .
. . . 
:
:
1 = 2 5 B
2 = 35
3 = 18
Ri1 = 2
Ri2 = 1
Ri3 =2
R1 = 12
R2 = 5
R3 = 14
R4 = 6
1) :
A
2) :
φ0 = 0
φ1 = φ0 - I∙R1 = 0 - 12 = -12 B
φ2 = φ1 + 1 - I∙Ri1 = -12 + 25 - 2 = 11 B
φ3 = φ2 - I∙R2 = 11 - 5 = 6 B
φ4 = φ3 + E2 - I∙Ri2 = 6 + 35 - 1 = 40 B
φ5 = φ4 - E3 - I∙Ri3 = 40 - 18 - 2 = 20 B
φ6 = φ5 - I∙R3 = 20 - 14 = 6 B
φ0 = φ6 - I∙R4 = 6 - 6 = 0
: , , .
:
| 1. ? | ; . |
| 2. | ) ; ) . |
.
I, U, η = F(R).
R=0 Rxx= 
. , .
1) I = 
= 
2) I = 
3) 
1: ;
2: ;
1) U = 
2) 
3) 
1: ;
2: ..
|
|
|
...
: η 1 .., , .
Pu, P = F(R)
Pu = E∙I = E∙ 
: .
P = f(R) , . . η = 50%, .
:
| 4. . | 1) ; 2) ; 3) . | ) ; ) ; ) . |
