Ke Kānāwai Mua o Kirchhoff

ʻO ke kānāwai mua o Kirchhoff, i ʻike ʻia hoʻi ʻo ke kānāwai kiko lālā, ʻōlelo ʻo ia he like ke au uila e komo ana i kahi kiko lālā me ke au uila e haʻalele ana i kēlā kiko lālā. ʻO kahi kiko lālā i loko o kahi kaapuni uila kahi kiko kahi e hui ai ʻelua a ʻoi aku paha nā alakaʻi. e like me ke kiko a ma ke kiʻi ma ka ʻaoʻao.

ʻO I ke au uila e komo ana i ke kiko lālā, ʻoiai ʻo I₁ a ʻo wau₂ ke au uila e puka mai ana mai ke kiko lālā, I = I₁ + ʻO wau₂ʻO kekahi laʻana, e nānā i ke kiʻi ma lalo.

ʻO I ke au uila e komo mai ana, ʻoiai ʻo I₁, I₂ a ʻo wau₃ ʻo ia ke au uila e puka mai ana, I = I₁ + ʻO wau₂ + ʻO wau₃.

Hoʻokumu ʻia ke kānāwai mua o Kirchhoff ma ke kānāwai o ka mālama ʻana i ka uku uila e ʻōlelo ana he mau loa ka uku, no laila e like ka uku uila e komo mai ana me ka uku uila e puka ana, ʻaʻohe uku uila e nalowale. ʻO ke au uila ke kahe ʻana o ka uku uila ma luna o kahi manawa kikoʻī. Ma muli o ka mālama ʻia ʻana o ka uku uila, ua like ke au e komo ana i kahi lālā me ke au e haʻalele ana i kēlā lālā.

Ua hoʻokumu ʻia ke kānāwai mua o Kirchhoff e Gustav Kirchhoff (1824-1887), he loea lapaʻau Kelemania.

Laʻana nīnau 1:

I₁ = 2 Amperes, I₂ = 3 Amperes, I₃ = 5 Amperes, I₄ = 3 Amperes. E hoʻoholo i ka I₅!

Pahana

I loko = I waho

I₁ + ʻO wau₃ =I₂ + ʻO wau₄ + ʻO wau₅

2 A + 5 A = 3 A + 3 A + I₅

7 A = 6 A + I₅

I₅ = 7 A – 6 A

I₅ = 1 Amperes

Laʻana nīnau 2:

ʻO I = 10 Amperes, ʻO I₁ = 2 Amperes, I₂ = 4 Amperes. E hoʻoholo i ka I₃!

Pahana

I loko = I waho

ʻO wau = ʻO wau₁ + ʻO wau₂ + ʻO wau₃

10 A = 2 A + 4 A + I₃

10 A = 6 A + I₃

I₃ = 10 A – 6 A

I₃ = 4 Amperes