, .
1. - I1 = I2 = I3;
2. - U=U1 + U2 + U 3;
3. - R= R1 + R2 + R3;
4. , - .
, , .
:
1. -
U = U1 = U2 = U3
2. - I = I1 + I2 + I3
3. ,
- (G)
.
G = G1 + G2 + G3
4. , , .
1.
2. , , ; .
:
1. . | ; . | |
2. . | ; . | |
3. . | ) ; ) ; ) ; ) | |
:
U = 60
R1 = 7
R2 = 12
R3 = 4
: I1; I2; I3 =?
R2 R3 , R2-3 R1.
R = R1 + R2 - 3
R =R1+R2∙3= 7 + 3 = 10
I1 = I = 6
U2 - 3 = I∙R2 - 3 - :
U2 - 3 = I∙R2 - 3 = 6∙3 = 18
U2 - 3 = U2 = U3 =18 - ..
:
U=240
R1 = 20
R2 = 120
R3 = 40
R4 = 60
R5 = 30
R6 = 20
: I1-6 -?
; R4-6 = 10 ;
;
; R2-3 = 30
R=R1+R2-3+R4-6 = 20 + 30 +10 = 60 ;
; ;
U2-3 =I∙R2-3= 4∙30 = 120 ;
U2 - 3 = U2 = U3;
;
;
U4-6=I∙R4-6=4∙10=40B;
U4-6=U4=U5=U6;
;
;
;
:
E = 20
Ri=2
R1 = 9
R2 = 6
R3 = 12
R4 = 1
R5 = 2
R6 = 1
R4-6 = R4 + R5 + R6;
;
R3-6 = 3 ;
R = R1 + R3-6 +R2 = 9 + 3 + 6 = 18 ;
I= ;
I=I1=I2=1;
|
|
U3-6=I∙R3-6=1∙3=3;
U3-6=U3=U4-6;
I3= ;
I4=I5=I6= ;
C . .
Pu=P+0;
EI=I21∙ R1+ I22∙ R2+ I23R3+I42R4+I25R5+I26+I2Ri;
20∙1=12∙9+12∙6+(0,25)2∙12+(0,75)2∙1+(0,75)22+(0,75)21+12∙2;
20=20-
- , .
- :
:
1) ;
2) ;
3) :
- .
) ()
= 0. = 1
U ,
U = U
1) .
2) , : R r . , .
: .
:
1. 0 ÷ ∞? | ; . |
2. - . | ) ; ) ; ) ; ) ; ) . |
3. , ? | ; . |