3.1.8, 3.2.5.
1
1. , 1,8×10-8 , , ‒0,3×10‒8 , ‒ 0 . ? 5 ?
2. H l = 10 t = 3 /. , , , .
3. R τ. .
4. 1 = 1 2 = 2 U = 900 . , U = 500 ?
5. 100 R 1 = 2 , . U 1 = 80 . , U 2 = 60 . R 2 .
6. R = 20 t = 2 I 0 = 0 I max = 6 (. .). Q 1 , Q2 , Q2 /Q 1.
7. e1 = 2e2, R 1 = R 3 = 20 , R 2 = 15 , R 4 = 30 (.). I = 1,5 , . e1 e2, R 2 R 3.
2
1. 0,5 , 1 , , 4 . .
2. H l = 10 t = 3 /. , , , .
3. 1 0,1 . .
4. , U = 600 , , (). ε, U 1= 100 .
5. 8 . I = 2 0,75. .
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6. 12 5 10 . ?
7. ε2, ε1 = 1 , ε2 = 2 , ε3 = 3 , r 1 = 1 , r 2 = 0,5 , r 3 = 0,3 , R 4 = 1 , R 5 = 0,3 (. .).
3
1. 2 10 . , .
2. , , , s = 20 /2, (t = 0,4 /), F, 1 .
3. t = 10 /. j, , , .
4. : (ε1 = 5) d 1 = 2 (ε2 = 3) d 2 = 1,5 , S = 100 2.
5. , 1,1 , 1 2 .
6. t = 10 I 1 = 1 I 2 = 2 Q = 5 . .
7. (. .) ε1 = 2,1 , ε2 = 1,9 , R1 = 45 , R2 = 10 , R3 = 10 . . .
4
1. 50 , . .
2. 10 . t1 = t2 = 0,1 /. , 10 .
3. 10 (. .). 1000 /. .
4. σ =0,2 /2. d 1 . d 3 ?
5. . 2 . I = 0,25 , U = 100 . .
6. I = 0 t = 10 . Q = 1 . , 3 .
7. R , , ε1 = 1,5 , ε2 = 3,7 , R 1 = 10 , R 2= 20 , R = 5 . .
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5
1. 10 10 . , .
2. H 10 t = 3 /. , , 10 .
3. (q 1 = 20 ) R = 10 q 2 = ‒10 . , 5 15 .
4. 1,5 . d 5 . , d 1= 3 ?
5. R 1 = 16 1 , R 2 = 8 1,8 . .
6. 3 , . Q, t = 8 , 200 . q, . .
7. , , ε1 = 60 , ε2 = 80 , ε3 = 70 , R 1 = 20 , R 2 = 50 , R 3 = 5 , R 4 = 65 , R 5 = 85 . R 5.
6
1. 2 4 60 . , , , . .
2. 3 . . 10 .
3. , σ = 1 /2. , 1 = 20 2 = 50 .
4. (ε = 7). U 1= 100 . U 2, ?
5. U = 2,1 , R 1 = 5 , R 2= 6 R 3 = 3 . I ?
6. t = 10 I 1 = 1 I 2 = 2 Q = 5 . .
7. , , ε1 = 10 , ε2 = 20 , ε3 = 30 , ε4 = 40 , ε5 = 50 , R 1 = 20 , R 2 =50 , R 3 = 45 , R 4 = 65 , R 5 = 85 . .
7
1. 20 - ‒50 100 . , q 3 = ‒10 , , 20 .
2. R = 0,5 . ρ = 800 /3. , . = 3,6 /.
3. R = 10 , ρ = 20 /3. , r 1 = 2 r 2 = 8 .
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4. U 1 = 500 . S = 200 2, d = 1,5 . (ε = 2). U 2 , 1 2 .
5. R 2=20 R 3=15 (. .). R 2 I 2 = 0,3 . I = 0,8 . R 1.
6. 10 50 5 10 . , .
7. 4 1 ε1 = 1,5 , ε2 = 1,8 (. .). . .
8
1. , 5 , 120 , 10 ‒ 15 . ?
2. 8 . 6 , , . .
3. l = 10 Q = 1 . , = 20 .
4. (ε = 2) d = 1 , . , ?
5. R 2 , R 1 = R 3 = 40 , R 2 = 80 , R 4 = 34 , 100 . (.).
6. (ρ = 4,2∙10-7 ∙) 1,5 , , 10 1,2 , 10? 60%, 0,2 , 100 .
7. e = 120 , R 3 = 20 , R 4 = 25 (..). R 1 U 1 = 40 . I = 2 . R 2.
9
1. , . , r = 53 , ν .
2. 6,4 -6,4 12 . , 8 8 .
3. 8 , τ = 10 /. , r 1 = 2 r 2 = 7 .
4. = 250 . (ε = 2) d = 0,05 . D ?
5. , 2 , 12 . , 0,05 ?
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6. . R 1 = 4 , R 2 = 2 , R 3 = 3 , R 4 = 4 . Q 1/ Q 3, R 1 R 3 ?
7. ε1 = 6 ε1 = 5 r 1 = 1 r 2 = 2 , . , R = 10 .
10
1. ‒9 ‒36 3 . , . .
2. 12 t = 200 /. , r = 5 .
3. R = 5 , σ = 1 /. , r 1 = 10 r 2 = 15 .
4. U = 150 . U 1, .
5. , , I 0 = 4,8 . , ?
6. , 10 , 4 , ‒ 9 . , , .
7. , , ε1 = 20 , ε3 = 25 , R 1 = 10 , R 2 = 15 , R 3 = 12 , . R 3.