Matāgaluega eletise e iai resistors i le tutusa ma le tete'e i totonu - fa'afitauli ma fofo
1. E faʻavae i luga o le ata o loʻo i lalo, afai o le puna o le malosiaga eletise (emf) e 24 Volts, fuafua le tafe eletise I.
Ua iloa:
Puna o le emf = 24 Volt
Tete'ega i totonu (r) = 2 Ohms
Tete'e 40 Ohm, 20 Ohm, ma le 20 Ohm.
Mana'o d: Tafe eletise I
Fofo:
O resistors ua feso'ota'i fa'atasi, o le resistor tutusa:
1/R = 1/40 + 1/20 + 1/20
1/R = 1/40 + 2/40 + 2/40
1/R = 5/40
R = 40/5
R = 8 Ohm
Voltage fa'ai'u:
V = emf – I r
V = 24 – I 2
Tafe eletise I:
V = IR
24 – 1 2 = 1 8
24 = 1 8 + 1 2
24 = 1 (10)
I = 24/10
I = 2.4 Amperes
2. E faʻavae i le ata o loʻo i lalo, afai o le R 1 = 3 Ω, R 2 = 4 Ω, R 3 = 4 Ω ma o le tafe eletise e 0.5 A. Fuafua le voltage eletise.
Ua iloa:
Tafe eletise (I) = 0.5 Ampere
Tete'e R 1 = 3 Ohm
Tete'e R 2 = 4 Ohm
Tete'e R 3 = 4 Ohm
Manaomia: Voltage eletise (V)
Fofo:
Fuafua le tete'e tutusa:
O le R 2 ma le R 3 e feso'ota'i fa'atasi. O le resistor tutusa:
1 /R 23 = 1/R 2 + 1/R 3 = 1/4 + 1/4 = 2/4
R 23 = 4/2 = 2 Ohm
O le R 1 ma le R 23 ua feso'ota'i fa'asolosolo. O le resistor tutusa:
R = R 1 + R 23 = 3 + 2 = 5 Ohms
Voltage eletise:
V = IR = (0.5)(5) = 2.5 Volt
