Xeerka labaad ee Kirchhoff wuxuu dhigayaa in isbeddelka awoodda korantada ee wareegga wareegga xiran uu yahay eber. Xeerka labaad ee Kirchhoff wuxuu ku salaysan yahay sharciga ilaalinta tamarta, kaas oo sheegaya in tamartu ay tahay mid weligeed ah.
Si aad si fiican u fahamto tan, qiyaas dallacaadda korontada oo ku socota wareeg xiran, sida sawirka ku cad. iska caabin koronto (R), tamarta awoodda korontada waa la dhimayaa sababtoo ah waxaa loo isticmaalaa iska caabintan. Haddii dallacaadda korontadu ay dhex marto iska caabin koronto oo kale, tamarta awoodda korontadu way hoos u dhacdaa mar kale sababtoo ah waxaa mar kale loo isticmaalaa iska caabinta. Intaa waxaa dheer, marka dallacaadda korontadu ay dhex marto isha danabka laga bilaabo awood hoose ilaa awood sare, tamarta awoodda korontadu way korodhaa. Marka ay ku soo noqoto meeshii asalka ahayd, tamarta awoodda korontadu waxay la mid tahay sidii hore, halkaas oo isbeddelka tamarta awoodda korontadu ay eber tahay. Marka la codsanayo KirchhoffXeerka labaad ee wareegga korantada, waxaan isticmaalnaa isbeddelka danabka korontada, ee ma isticmaalno isbeddelka tamarta awoodda korontada.
Wareegga sida ku cad jaantuska kore waxaa lagu falanqeyn karaa iyadoo la adeegsanayo sharciga Ohm (V = IR) iyo isla'egta iska caabinta taxanaha ama iska caabinta barbar socota. Wareegyada adag sida jaantuska waxaa lagu falanqeyn karaa iyadoo la isticmaalayo xeerka koowaad ee Kirchhoff iyo xeerka labaad ee Kirchhoff.
Waa kuwan xeerar muhiim ah marka la isticmaalayo xeerka labaad ee Kirchhoff si loo falanqeeyo wareegga.
Marka hore , dooro jihada hadda jirta, ha ahaato saacad-wareegga ama dhinaca ka soo horjeeda saacad-wareegga. Haddii jawaabtu tahay taban, jihada dhabta ah ee hadda korontadu waxay ku socotaa jihada hadda la go'aamiyay. Haddii jawaabtu tahay mid togan, jihada dhabta ah ee hadda korontadu waxay la mid tahay jihada hadda la doortay.
Marka labaad , marka la dhex maro ilo danab oo ka imanaya awood sare una gudbaysa awood hoose (ilaa -), waxaa jira hoos u dhac ku yimaada danabka korontada si danabku u noqdo mid taban (ΔV = -ε). Taas beddelkeeda, haddii uu ka gudbo awood hoose una gudbo awood sare (-ilaa), waxaa jira koror ku yimaada danabka korontada si danabku u noqdo mid togan (ΔV = ε).
Saddexaad , marka ay dhex marto iska caabinta korontada, haddii wareeggu uu ku socdo jihada qulqulka korontada, danabku waa taban (V = – IR). Taas beddelkeeda, haddii jihada wareeggu ay ka soo horjeeddo jihada qulqulka korontada, danabku waa togan yahay (ΔV = IR).
Muunad dhibaato 1aad:
R1 = 200 Ω iyo R2 = 300 Ω. ε = 12 Volts. Xisaabi qulqulka korantada ee wareegga adoo isticmaalaya KirchhoffXeerka labaad ee!
Solution:
Jihada jihada saacadda u jeedsan.
– IR 1 – IR 2 + ε = 0
– 200 I – 300 I + 12 = 0.
– 500 I + 12 = 0
– 500 I = – 12
I = 12/500
I = 0.024 A
Haddii lagu xisaabiyo iyadoo la adeegsanayo sharciga Ohm iyo qaacidada isku-darka iska caabinta taxanaha ah:
R = R 1 + R 2 = 200 + 300 = 500 Ω.
Isle'egta sharciga Ohm:
V = IR
I = V / R = 12 / 500 = 0.024 A.
Muunad dhibaato 2aad:
R 1 = 100 Ω, R 2 = 200 Ω, R 3 = 300 Ω, ε 1 = 9 Volts, ε 2 = 12 Volts. Xisaabi baaxadda iyo jihada qulqulka korantada ee wareegga!
Solution:
Xullo jihada korantada ee hadda jirta, jihada wareegguna waa la mid tahay jihada saacadda u socota.
- IR 1 - IR 2 - ε 1 - IR 3 + ε 2 = 0
– 100 I – 200 I – 9 – 300 I + 12 = 0
– 100 I – 200 I – 300 I + 3 = 0
– 600 I + 3 = 0
– 600 I = – 3
I = 3/600
I = 0.005 A
Korontadu waa mid togan sidaa darteed jihada ayaa la mid ah jihada la doortay.
