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4.2

'

Rj R2 R n

r i

j ^ R n ^ :

i = i, = i 2 = ... = i n = = const

U = U 1 = U 2 = ... = U n = - const

U = U x + U 2 + ... + U n

II

+

to

+

+

3 *

R = Rj + R2 "1" ...? +? R n j

R = t R i

i = 1

  • 111 1
  • - = - + - + ... 4 * -

R R, R 2 R n

- =? -

Ͳ . -

- , .

q :

I - ; U - ; R - ; q = It - ( ), t.

: ().

:

: ().

(, ):

(, ):

(, ):

I - ; U - ; - ; R - ; - .

- :

Q - , t.

ʳ

ʳ.

( ):

- ' . , , , - (. 4.23, ).

ʳ ( ):

, . , (. . ), . (. 4.23, ).

. 4.23

 
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