3.
|
| . 3. |
1. .
1. 100 ( ), 4-300.
2. l =15 . .
3. 
-2 ∆U = 5 ( 5 70 ), I . 1.
4. 25 .3. 1.
5. I = f (U) .
1
| / | l =15 | l =25 | ||
| ,
| I , | ,
| I , | |
2.
, .
1. 15
2. U = 100 , = 75 .
3. (l) , I . 2.
4. I = f (l) .
5. 15 . 100 0 10 3.
6. I = f (U) .
2
| / | = 70 ,  = 100
| |
| l, | I , | |
3
| / | = 70 , l =15
| |
| ,
| I , | |
1. ?
2. .
3. .
4. .
5. ?
6. ?
7. .
8. ?
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