1. Kutengera chithunzi chomwe chili pansipa, dziwani mphamvu yamagetsi kudzera mu R 1.
Zodziwika:
Wotsutsa 1 (R1 ) = 4 Ω
Wotsutsa 2 (R2 ) = 4 Ω
Wotsutsa 3 (R3 ) = 8 Ω
Mphamvu yamagetsi (V) = 40 Volts
Kufunidwa: Mphamvu yamagetsi kudzera pa R1
Yankho:
Mphamvu yamagetsi imayenda kuchokera ku mphamvu yayikulu kupita ku mphamvu yochepa. Njira yamagetsi mu dera lomwe lili pamwambapa ndi yofanana ndi njira yozungulira wotchi.
Mphamvu yamagetsi yomwe imatuluka mu batri
Choyamba, werengani kukana kofanana ( R). Pambuyo pake, werengani mphamvu yamagetsi pogwiritsa ntchito equation ya lamulo la Ohm :
V = IR kapena Ine = V / R
V = voltage , I = magetsi , R = kukana kofanana
Kukana kofanana:
Resistor R1 ndi resistor R2 zimalumikizidwa motsatizana . Kukana kofanana:
1/R 12 = 1/R 1 + 1/R 2 = 1/4 + 1/4 = 2/4
R 12 = 4/2 = 2 Ω
Resistor R 12 ndi resistor R 3 zimalumikizidwa motsatizana . Kukana kofanana:
R = R 12 + R 3 = 2 + 8 = 10 Ω
Mphamvu yamagetsi yomwe imatuluka mu batire:
Ine = V / R = 40 / 10 = 4 A
Mphamvu yamagetsi yomwe imatuluka mu batire ndi 4 Ampere.
Voliyumu yamagetsi V ab ndi V bc
Kirchhofflamulo loyamba la akunena kuti pa malo aliwonse olumikizirana, kuchuluka kwa mafunde onse olowa mumgwirizanowu kuyenera kufanana ndi kuchuluka kwa mafunde onse otuluka mumgwirizanowu.
Kutengera lamulo loyamba la Kirchhoff , zatsimikiziridwa kuti ngati magetsi atuluka mu batire ndi 4 A ndiye kuti magetsi amagetsi kudzera mu ab ndi ofanana ndi 4 Ampere, kotero magetsi amagetsi kudzera mu bc ndi 4 Ampere.
Voliyumu yamagetsi V ab :
V ab = I ab R ab = (4)(2) = 8 Volts
Voliyumu yamagetsi V bc :
V bc = I bc R bc = (4)(8) = 32 Volts
Dera lomwe lili pamwambapa limalumikizidwa motsatizana kotero kuti magetsi onse amagetsi ndi V = V ab + V bc = 8 Volts + 32 Volts = 40 Volts.
Mphamvu yamagetsi imayenda kudzera mu R1 = 4 Ω
I 1 = V ab / R 1 = 8 Volts / 4 Ohms = 2 A
I 2 = V ab / R 2 = 8 Volts / 4 Ohms = 2 A
Mphamvu yamagetsi yomwe imatuluka mu batire ndi 4 A. Ikafika pamalo a magetsi, mphamvu yamagetsi imagawidwa m'magulu awiri, mphamvu yamagetsi ya 2 Ampere imadutsa mu resistor R 1 ndi
Mphamvu yamagetsi ya 2 A imayenda kudzera mu resistor R 2 . 2 A + 2 A = 4 A.
2. Kutengera chithunzi chomwe chili pansipa, dziwani mphamvu yamagetsi yomwe imayenda kudzera mu resistor ya 4-Ω.
Zodziwika:
Wotsutsa 1 (R1 ) = 6 Ω
Wotsutsa 2 (R2 ) = 4 Ω
Wotsutsa 3 (R3 ) = 1.6 Ω
Mphamvu yamagetsi (V) = 16 Volts
Kufunidwa: Mphamvu yamagetsi imayenda kudzera mu 4 Ω
Yankho:
Mphamvu yamagetsi imayenda kuchokera ku mphamvu yayikulu kupita ku mphamvu yochepa. Njira yamagetsi mu dera lomwe lili pamwambapa ndi yofanana ndi njira yozungulira wotchi.
Mphamvu yamagetsi yomwe imatuluka mu batri
Kukana kofanana:
Resistor R1 ndi resistor R2 zimalumikizidwa motsatizana. Resistor yofanana:
1/R 12 = 1/R 1 + 1/R 2 = 1/6 + 1/4 = 2/12 + 3/12 = 5/12
R 12 = 12/5 = 2.4 Ω
Resistor R 12 ndi resistor R 3 zimalumikizidwa motsatizana. Resistor yofanana:
R = R 12 + R 3 = 2.4 + 1.6 = 4 Ω
Mphamvu yamagetsi yomwe imatuluka mu batire:
Ine = V / R = 16 / 4 = 4 A
Voliyumu yamagetsi V ab ndi V bc
Kutengera lamulo loyamba la Kirchhoff, Anatsimikiza kuti ngati magetsi atuluka mu batire ndi 4 A ndiye kuti magetsi amagetsi kudzera mu ab ndi ofanana ndi 4 Ampere, koteronso magetsi amagetsi kudzera mu bc ndi 4 Ampere.
Voliyumu yamagetsi ya V ab :
V ab = I ab R ab = (4)(2.4) = 9.6 Volts
Voliyumu yamagetsi V bc :
V bc = I bc R bc = (4)(1.6) = 6.4 Volts
Dera lomwe lili pamwambapa limalumikizidwa motsatizana kotero kuti magetsi onse amagetsi ndi V = V ab + V bc = 9.6 Volts + 6.4 Volts = 16 Volts.
Mphamvu yamagetsi yomwe imayenda kudzera mu R2 = 4 Ω
I 1 = V ab / R 1 = 9.6 Volts / 6 Ohms = 1.6 A
I 2 = V ab / R 2 = 9.6 Volts / 4 Ohms = 2.4 A
Mphamvu yamagetsi yomwe imatuluka mu batire ndi 4 A. Ikafika pamalo a magetsi, mphamvu yamagetsi imagawidwa m'magulu awiri,
Mphamvu yamagetsi 1.6 A imayenda kudzera mu resistor R 1 ndipo mphamvu yamagetsi 2.4 A imayenda kudzera mu resistor R 2. 1.6 A + 2.4 A = 4 A.
