7 mau laʻana o nā nīnau no ka hiki ke hoʻopili ʻia o ka pā like
1. ʻO kahi capacitor pā like me ka mana o C he vacuum permittivity o εo, ka ʻāpana ʻāpana A a me ka mamao ma waena o nā papa d. Inā hoʻonui ʻia ka ʻāpana ʻāpana o ka capacitor i 4 mau manawa, lilo ka mamao ma waena o nā papa i 2d a lilo ka permittivity vacuum i 5εo, no laila ka mana o ka capacitor pā like lilo ia i…
Pahana
Ua ʻike ʻia :
Ua nīnau ʻia Inā ʻo ka permittivity vacuum = 5εo, ʻāpana ʻāpana kea = 4A a me ka mamao ma waena o nā papa = 2d a laila loli ka mana o ka capacitor papa like i...
Pane :
Hoʻololi ka mana o kahi capacitor pā like i ka 10 manawa o kona mana mua.
2. ʻO ka capacitor me ka mana nui loa e pili ana i ka pakuhi ma lalo nei…
Pahana
ʻO ke ʻano o ka capacitor pā like :
Ka mana o kēlā me kēia capacitor :
ʻO ka capacitor nona ka mana capacitor nui loa ʻo ia ka capacitor 3 (C)3).
3. E hoʻolohe i nā kumu aʻe!
(1) Paʻa mau o ka dielectric
(2) ʻOkoʻa hiki ke hana ma waena o nā papa
(3) Mānoanoa o ka pā
(4) ʻĀpana ʻili o ka diski
(5) Ka mamao ma waena o nā ʻāpana ʻelua
(6) Ka nui o ka hoʻouku uila
Nā mea e hoʻohuli ai i ka hiki capacitor pā like ʻo ia…
Pahana
Ma muli o ke ʻano hana o ka capacitor capacitor, ua hoʻoholo ʻia ʻo nā mea e hoʻohuli i ka capacitor capacitor ʻo (1), (4) a me (5).
4. ʻO ka hoʻohālikelike ʻana o nā mana o nā capacitors 1 a me 2…
Pahana
Ua ʻike ʻia :
Kapena 1:
ʻĀpana ʻili = 2A
Ka mamao ma waena o nā papa = d1
Kapena 2:
ʻĀpana ʻili = A
Ka mamao ma waena o nā papa = 2 d1
Ua nīnau ʻia Hoʻohālikelike ʻana i nā mana o nā capacitors 1 a me 2
Pane :
Hoʻohālikelike ʻana o nā mana o nā capacitors 1 a me 2:
5. Hōʻike ke kiʻi ma lalo nei i ʻelua mau capacitors pā like I a me II.
ʻO ka hoʻohālikelike ʻana o nā mana o nā capacitors pā like I a me II he...
A. 1 : 6
B. 1 : 1
K. 2 : 3
D. 3 : 2
E. 6 : 1
Pahana
Ka mea hoʻopili pā like I:
Ka mea hoʻopili pā like II:
Hoʻohālikelike o nā capacitors pā like I a me II:
ʻO A ka pane pololei.
6. E nānā i ke kiʻi o ʻelua mau pālua o nā capacitors pā like ma lalo! Inā ʻo A 1 = ½ A 2 a me d 2 = 3 d 1 a laila ʻo ka lakio o ka hiki o nā capacitors pā like ma waena o ke kiʻi (2) a me ke kiʻi (1) ʻo…
A. 2/5
B. 2/3
C. 3/4
D. 3/2
E. 4/3
Pahana
Ua ʻike ʻia :
Ka mea hoʻopili pā like 1:
A1 = 1
d1 = 1
Ka mea hoʻopili pā like 2:
A2 = 2
d2 = 3
Ua nīnau ʻia Hoʻohālikelike ʻana i ka hiki o nā capacitors pā like 2 a me 1
Pane :
Ka mea hoʻopili pā like I:
Ka mea hoʻopili pā like II:
Hoʻohālikelike ʻana o nā capacitors pā like II a me I:
ʻO ka pane pololei ʻo B.
7. ʻO ka mamao ma waena o ʻelua mau ʻāpana metala like he 0,2 kenimika. Hāʻawi ʻia nā ʻāpana metala ʻelua i nā uku uila kūʻē a hiki i ka hiki ʻana o ka ʻokoʻa hiki i 20.000 volts. ʻO ka uku uila he 1,6 × 10 –19 C. ʻO ka nui a me ke kuhikuhi o ka ikaika Coulomb ma luna o kahi uila ma waena o ʻelua mau ʻāpana metala...
A. 0,80 × 10-12 N, i luna
B. 1,20 × 10-12 N, i lalo
C. 1,20 × 10-12 N, i luna
D. 1,62 × 10-12 N, i lalo
E. 1,62 × 10-12 N, i luna
Kūkākūkā:
Ua ʻike ʻia :
d = 0,2 kenimika = 0,002 m
V = 20.000 Volt
e = 1,62 x 10-19 C
Ua nīnau ʻia :
Ka ikaika uila (F) ?
Pane :
ʻO ke ʻano no ke kahua uila, ka uila a me ka mamao ma waena o nā papa :
E = V / d
Wehewehe: E = kahua uila, V = voltage, d = mamao ma waena o nā papa
ʻO ke ʻano hana o ka ikaika Coulomb, ke kahua uila a me ka hoʻopiʻi :
F = q E
Wehewehena: F = Ka ikaika Coulomb a i ʻole ka ikaika uila, q = ka hoʻouka ʻana, E = kahua uila
ʻO ka nui a me ke kuhikuhi o ka ikaika Coulomb ma luna o nā electrons :
F = q E = q V / d
F = (1,62 x 10-19 C)(20.000 V) / 0,002 m
F = 1,62 x 10-12 N
Ua hoʻopiʻi maikaʻi ʻole ʻia nā electrons, no laila ua kipaku ʻia lākou e ka papa maikaʻi ʻole a huki ʻia e ka papa maikaʻi. No laila, ke kuhikuhi o ka ikaika i luna.
ʻO ka pane pololei ʻo E.
