CHAPTR 17 律 17-1 17-2 17-3
CHAPTR 17 律 17-1 17-2 17-3 17-4 17-5 17-6 17-7 17-8 17-9 17-10 17-11 17-12 17-13 17-14 17-15 17-16
17-1 A Φ = A Φ (17-1) P. 3
17-1 SI 2 P. 4
A 17-2 A A A n Φ = (17-2) An cos P. 5
17-2 A n A (17-2) A n Acos (17-3) Φ = Acosθ (17-4) P. 6
A A 17-2 (17-2) A (17-4) Φ = A= Acosθ Φ (17-5) P. 7
dm 17-3(a) Φ = 1 A1 + 2 A2 + = A i A i (17-6) P. 8
(17-6) Φ A i = da (17-7) P. 9
17-3(b) (17-7) Φ = da (17-8) P. 10
17-4 0.5 600 37 90 37 53 (17-5) Φ = A θ = 2 cos (600 )(0.5 (cos53 ) =90 2 P. 11
17-5 q r 17-5 =0 (17-8) Φ = da = dacos0 = da = da = A 1 q 2 = ( )(4 π r ) 2 4πε 0 r q = ε 0 P. 12
4 r 2 P. 13
練 1. R 2. yz 10 = 500iˆ+ 100 ˆj( ) P. 14
q 1 0 r 17-6 S 1 S 2 S 3 q 0 P. 15
S 4 q 0 q q 0 q P. 16
q 1 0 Φ = da = q ε 0 (17-9) q 17-6 +Q P. 17
P. 18
16-7 17-7 q (17-9) P. 19
17-8 P. 20
17-9 +q q +q P. 21
da da da = 0 da da = da P. 22
17-10 q 1 2 C q 2 3 C q 3 7 C q 4 5 C S P. 23
Φ = q q1 + q2 = ε 0 ε 0 + q 3 ( + 2 10 6 ) + ( + 3 10 8.85 10 = 12 6 2 ) + ( 7 10 2 / 6 ) = 2.26 10 5 2 / q 4 P. 24
17-11 r da da =0 2 Φ = da = dacos0 = da = A (4πr ) (1) = P. 25
q 1/ 0 Φ = q (2) ε 0 (1) (2) 2 q 1 q (4πr ) = = 2 ε 0 4πε 0 r q r r Q F = Q = 1 4πε 0 qq 2 r P. 26
R q r (a) (b) P. 27
(a) r 17-12(a) q Φ = A = = 0 ε 0 (17-10) =0 P. 28
(b) 17-12(b) r Φ A 2 = = (4π ) = r 1 q = ( ) (17-11) 2 4πε r 0 q ε 0 P. 29
(17-11) (17-10) (17-11) 17-12(c) R r P. 30
R q r (a) (b) (a) 17-13(a) r(r<r) Φ 2 = A = ( 4πr ) = q / ε 0 1 q = (1) 2 4 πε r 0 P. 31
q q q = 4πr 4πR 3 3 / 3 / 3 r 3 q = 3 R q q (1) = 1 4πε 0 qr 3 R ( ) (17-12) r =0 P. 32
(b) 17-13(b) r(r>r) 2 Φ = A = (4π r ) = q /ε 1 q = 2 4πε r ( ) (17-13) 0 q P. 33
r=r (17-12) (17-13) 17-13(c) R r P. 34
r 17-14 r h S 1 S 2 P. 35
2 r h S 3 A=(2 r)h S 3 S 1 S 2 S 3 Φ = 0 + 0 + A = (2πrh) = 2πrh Φ = q ε 0 (2) P. 36
(1) (2) = λ 2πε 0 hr (3) q h q=h (3) = q 2πε 0 r (17-14) r P. 37
r 17-15(a) A r P. 38
S 1 S 2 (17-5) Φ = A = Acos0 = A P. 39
S 3 Φ = A + A + 0 = 2A (1) Φ = q ε 0 (2) (1) (2) = q 2ε 0 A (3) P. 40
q A q/a = q 2ε 0 ( ) (17-15) r 17-15(b) (17-15) P. 41
P. 42
17-16 A A A Φ = A P. 43
q Φ = = ε Φ = σ ε 0 Aσ 0 ε 0 ( ) (17-16) P. 44
練 3. 2 10 6 0.3 4. a a 2 Q P. 45
5. 8 4.5 10 6 N m 2 C 6. 10 5 10 6 (a) 5 (b) 20 (c) 7. 10 0.5 2 P. 46
8. 5 5 15 23 (a) 3 (b) 10 (c) 20 9. p 10. 20 5 10 4 P. 47
11. m q θ 12. a b ρ r (a) r<a (b) a<r<b (c) r>b P. 48
13. a b ρ r (a) a<r<b (b) r>b 14. R ρ (a) r (b) r P. 49