9 ():
;
;
;
;
10 ():
11 ():
, : , . .
:
U=100, R1= R2=25 , R3=15 , R4=75 .
12 ():
-
.
, .
.
, .
13 ():
:
I= Q/t
E= Au/q
W=q*E*d
U=A/q
14 ():
:
15 ():
16 ():
, .
17 ():
:
18 ():
:
19 ():
.
.
, .
, .
20 ():
, ,
21 ():
, : , . .
:
U=100, R1=100 , R2=10 , R3=15 , R4=75 .
22 ():
