1. I1 I2 (.23). 5 . I1, , 3,5 , 3.10-5 , I2 2 .
23
:
l = 5 = 5.10-2
I2 = 2
r1 = r2 = 3,5 = 3,5.10-2
= 3.10-5
___________________
I1 ?
.
,
, .
, (1)
a .
, I1 I2 r1 r2, .
a (.22),
cos =
cos = .
ϳ (1) 1 2 , r1=r2,
( cos )1/2.
os =
= 0
ϳ , 1
- 0,0816.I1 - 23,56 = 0.
.
䒺 I1 I2 , .
I1 = (9,79/2) = 4,895 .
³: I1 = 4,895 .
2. 30 /. , , 10 .
:
= 30 /
= 10 = 10-1
________________
I ?
. ³, '
.
= .
, , , . = 41, 1 ,
r0 ;
r0 = a/2 = 5 = 0,05 .
a 45 os45 .
.
, Ѳ,
= 3,77.10-5 ; a = 0,1 ; m = 1; m0 = 4p.10-7 /.
3. 10-5 . , 0,2 , 2 . = 1,7.10-8 ..
:
= 10-5
U = 0,2
I = 2
ρ = 1,7.10-8 .
S ?
.
. (1)
, (2)
|
|
l = 2pr ;
r ;
R .
ϳ l (2),
.
.
ϳ :
= 0,134 2.
4. , 50 , 30 . , , , 10 .
:
U = 50
a = 300
R = 10 = 10-1
______________
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