Sharciga ugu horreeya ee Kirchhoff, oo sidoo kale loo yaqaan sharciga dhibcaha laanta, wuxuu dhigayaa in qulqulka korontada ee galaya barta laanta uu la mid yahay kan korontada ee ka baxaya barta laantaas. Barta laanta ee wareegga korontada waa meel ay ku kulmaan laba ama in ka badan oo koronto-qaadayaal ah. sida farta a ee sawirka dhinaca.
I waa korontada oo galaysa barta laanta, halka I 1 iyo I 2 ay yihiin hirarka korontada ee ka baxaya barta laanta, I = I 1 + I 2. Tusaale kale, fiiri sawirka hoose.
Aniga ayaa ah koronto soo socota, halka anigana aan ahay1, Aniga2 anigana3 waa koronto soo baxaysa, I = I1 + Aniga2 + Aniga3.
Sharciga Koowaad ee Kirchhoff wuxuu ku salaysan yahay sharciga ilaalinta korantada, kaas oo sheegaya in korontada la ilaaliyo, si korontada soo socota ay ula mid noqoto korontada baxaysa; ma jirto wax koronto ah oo lumaysa. Korontada korontadu waa korontada ku socota muddo cayiman. Maadaama korontada la ilaaliyo, korontada soo galaysa bar laan waxay la mid tahay korontada oo ka baxaysa bar laanteeda.
Sharciga ugu horreeya ee Kirchhoff waxaa soo saaray Gustav Kirchhoff (1824-1887), oo ahaa fiisigis Jarmal ah.
Tusaale ahaan su'aal 1aad:
I1 = 2 Amperes, I2 = 3 Amperes, I3 = 5 Amperes, I4 = 3 Amperes. Go'aami I5!
Dood
Waan ku jiraa = Waan baxayaa
I 1 + I 3 = I 2 + I 4 + I 5
2 A + 5 A = 3 A + 3 A + I 5
7 A = 6 A + I 5
I 5 = 7 A – 6 A
I 5 = 1 Amper
Tusaale ahaan su'aal 2aad:
I = 10 Amperes, I1 = 2 Amperes, I2 = 4 Amperes. Go'aami I3!
Dood
Waan ku jiraa = Waan baxayaa
Aniga = Aniga 1 + Aniga 2 + Aniga 3
10 A = 2 A + 4 A + I 3
10 A = 6 A + I 3
I 3 = 10 A – 6 A
I 3 = 4 Amperes
