. , , .. . - . :
− ;
− ;
− ;
− .
. R (1, a) R .
E I (R + R) = E U U = 0. (1)
(1) .
( R = R),
abc
. 1. , : (a), (b) (c)
R = ∞, R = 0.
, - .
:
− U;
− P;
− I .
, U = U, . (, ).
.
(.2.) 1(I = I, U = U).
. 2..
. 2 1, b. , R = ∞, I = 0. - :
U = E.
, .
(.3) 2(I = 0, U = E).
. , , , .
. R ( 1, a) 2, . a b , .
2, c. a b . ab.
|
|
a b : Rab = 0. , :
U = RabI = 0,
I .
:
0 = E − R 0 I.
. , :
.
(.3) 3 (U = 0, I = I).
810 . , (2) R , ((3)) . , , . () .
() , , , .. .
. .
, , , , .
(1015 ), , .
1. , .1, b, 16,4 . , , 8 , 15,2 ?
.
U = UX = E = 16,4 .
U = E RI
2. , RV.
, E = 80 , R = 100 ?
. UV
.
RV = 100
RV = 2,5
RV = 400
, . (5), RV = ¥ : UV = E.
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