Lamulo Loyamba la Kirchhoff

Lamulo loyamba la Kirchhoff, lomwe limadziwikanso kuti lamulo la nthambi, limati magetsi olowa mu nthambi ndi ofanana ndi magetsi otuluka mu nthambiyo. Gawo la nthambi mu dera lamagetsi ndi malo omwe ma conductor awiri kapena kuposerapo amakumana. ngati mfundo a pachithunzi chomwe chili pambali.

Ine ndi mphamvu yamagetsi yolowera ku nthambi, pomwe ine₁ ndipo ine₂ Kodi magetsi akutuluka kuchokera ku nthambi, Ine = Ine₁ + I₂Chitsanzo china, onani chithunzi chili pansipa.

Ine ndiye mphamvu yamagetsi yomwe ikubwera, pomwe ine₁, I₂ ndipo ine₃ ndi magetsi omwe amatuluka, Ine = Ine₁ + I₂ + I₃.

Lamulo loyamba la Kirchhoff limachokera ku lamulo losunga mphamvu zamagetsi lomwe limati mphamvu zamagetsi ndi zamuyaya, kotero mphamvu zamagetsi zomwe zikubwera ziyenera kukhala zofanana ndi mphamvu zamagetsi zomwe zikutuluka, palibe mphamvu zamagetsi zomwe zimatayika. Mphamvu yamagetsi ndi kayendedwe ka mphamvu yamagetsi mkati mwa nthawi inayake. Chifukwa mphamvu yamagetsi imasungidwa, mphamvu yolowera mu nthambi ndi yofanana ndi mphamvu yotuluka mu nthambi imeneyo.

Lamulo loyamba la Kirchhoff linaperekedwa ndi Gustav Kirchhoff (1824-1887), katswiri wa sayansi ya zakuthambo wa ku Germany.

Chitsanzo cha funso 1:

I₁ = 2 Amperes, I₂ = 3 Amperes, I₃ = 5 Amperes, I₄ = 3 Ampere. Dziwani I₅!

Zokambirana

Ine mkati = Ine kunja

I₁ + I₃ = Ine₂ + I₄ + I₅

2 A + 5 A = 3 A + 3 A + I₅

7 A = 6 A + I₅

I₅ = 7 A – 6 A

I₅ = 1 Ampere

Chitsanzo cha funso 2:

Ine = 10 Ampere, Ine₁ = 2 Amperes, I₂ = 4 Ampere. Dziwani I₃!

Zokambirana

Ine mkati = Ine kunja

Ine = ine₁ + I₂ + I₃

10 A = 2 A + 4 A + I₃

10 A = 6 A + I₃

I₃ = 10 A – 6 A

I₃ = 4 Ampere