
Thai: 
ถึงตอนนี้เราได้พูดถึง
ตัวต้านทาน ตัวเก็บประจุ 
และองค์ประกอบอื่นๆ ไป
เราต่อพวกมันเข้าด้วยกัน
และเรียนเรื่องกฎของโอห์ม สำหรับตัวต้านทาน
และเรายังได้รู้เกี่ยวกับตัวต้านทานแบบอนุกรม
อย่างที่เราแสดงตรงนี้
แนวคิดเรื่องกฎของเคอร์คอฟ
พวกนี้คือกฎสามัญพื้นฐาน
ที่เราสรุปได้จากวงจรง่ายๆ
และในวิดีโอนี้ เราจะ
ทำเรื่องกฎกระแสของเคอร์คอฟกัน
ลองดูตัวต้านทานแบบอนุกรมพวกนี้กัน
มีจุดเชื่อมต่อตรงนี้
และนั่นเรียกว่าโหนด หรือจังก์ชัน
และสิ่งหนึ่งที่เรารู้คือว่า
เมื่อเราใส่กระแสผ่านตรงนี้
สมมุติว่าเราใส่กระแสผ่านตรงนี้
และเรารู้ว่ากระแสคือประจุที่ไหล
เรารู้ว่าประจุไม่สะสมตรงไหน
นั่นหมายความว่ามันออกจากตัวต้านทานนี้
และไหลเข้าไปในโหนด

English: 
- [Voiceover] Up to now we've talked about
resistors and capacitors
and other components,
and we've connected them up
and learned about Ohm's
law, for resistors,
and we've also learned some
things about series resistors,
like we show here.
The idea of Kirchhoff's Laws,
these are basically common sense laws
that we can derive from
looking at simple circuits,
and in this video we're gonna
work out Kirchhoff's Current Law.
Let's take a look at these
series resistors here.
There's a connection point right there,
and that's called a node, a junction.
And one of the things we know is that
when we put current through this,
let's say we put a current through here.
And we know that current
is flowing charge,
so we know that the charge
does not collect anywhere.
So that means it comes
out of this resistor
and flows into the node,

Bulgarian: 
До сега говорехме
за резистори и кондензатори,
и други компоненти
и ги свързахме,
и научихме закона на Ом
за резистори,
и научихме някои неща
за последователните резистори,
каквито показваме тук.
Идеята за законите
на Кирхоф –
това са логични закони,
които можем да намерим,
като гледаме прости вериги
и в това видео
ще работим със
законите на Кирхоф за електричеството.
Нека разгледаме
тези последователни резистори тук.
Има точка на свързване тук
и тя се нарича възел,
пресечна точка.
И едно от нещата,
които знаем,
е че когато пуснем
ток през това,
да кажем, че пускаме
ток през това...
И знаем, че токът
е течащ заряд,
знаем, че зарядът
не се събира никъде.
Това означава,
че излиза от този резистор
и потича към възела,

Czech: 
Mluvili jsme o rezistorech, kondenzátorech
a jiných prvcích elektrických obvodů,
spojovali jsme je
a učili jsme se Ohmův zákon.
Také už víme něco o rezistorech
a jejich sériovém zapojení, jako tady.
Kirchhoffovy zákony nám dá selský rozum,
odvodíme je z jednoduchých obvodů.
V tomto videu se podíváme
na První Kirchhoffův zákon – proudu.
Podívejme se na tyto
sériově zapojené rezistory.
Tomuto se říká uzel,
jakési rozcestí.
Víme, že když sem pustíme proud…
Pusťme sem nějaký proud.
Víme, že elektrický proud je tok nábojů,
které se nikde nehromadí.
To znamená, že projde rezistorem
a vteče do tohoto uzlu,

Korean: 
지금까지 우리는
저항과 축전기 등에 대해서 이야기했습니다
그리고 이들을 서로 연결하여
저항의 경우
옴의 법칙을 배우기도 했습니다
또 여기 보여진 것과 같이
저항의 직렬연결이나
병렬연결에 대해서도 배웠습니다
키르히호프의 법칙의 기본적인 원리는
아주 당연한 것들을 바탕으로 합니다
아주 간단한 회로에서부터
유도할 수 있는 것들입니다
이 영상에서는
키르히호프 전류 법칙을 배울 것입니다
먼저 여기 직렬연결된 저항을 살펴봅시다
두 저항이 연결되는 지점을
노드 또는 정점이라고 부릅니다
우리가 이미 알고 있는 것은
전류가 흐른다고 가정한다면
이 도선에 전류가 흐른다고 가정해봅시다
전류는 전하의 흐름이기 때문에
전하가 어디선가
소모되지 않는다는 것을 알고 있습니다
즉 전류는 저항을 통과하여
이 노드를 지난다는 것입니다

Korean: 
이 전류는 또 다시 저항을 지나서
반대쪽에서 흐르게 됩니다
모든 전류는 들어가고 다시 나오게 됩니다
이것이 바로 우리가 알고 있는
전하는 어딘가에서 쌓이지 않는다는
전하량 보존법칙입니다
이 전류를 i1이라 하고
이 전류를 i2라고 합시다
그렇다면 우리는 i1과 i2가
같다는 것을 바로 알 수 있습니다
전하에 대한 이야기는 충분히 된 것 같습니다
이제 또 다른 이야기를 해봅시다
만약 이 노드에 또 다른 저항을 연결해봅시다
이렇게 말이죠
그럼 이제 이 방향으로 흐르는
전류가 발생할 것입니다
이 전류를 i3라고 합시다
i1과 i2와 같다는 말은
이제 성립하지 않습니다
하지만 우리가 아는 것은
이 노드로 들어간 전류만큼 나와야 한다는 것입니다
따라서 우리는 i1은 i2와 i3를
더한 것과 같다고 말할 수 있습니다

Thai: 
และมันผ่าน ออกมาด้านนี้
กระแสทั้งหมดที่เข้ามา ได้ออกไป
นั่นคือสิ่งที่เรารู้
ว่าการอนุรักษ์ประจุ
และเรารู้ว่าประจุไม่ไปกองไว้ที่ไหน
เราจะเรียกอันนี้ว่ากระแส i1
และเราจะเรียกอันนี้ว่ากระแส i2
เรารู้ว่า เราเขียนได้เลย ว่า i1 เท่ากับ i2
มันค่อนข้างชัดเจนจากความรู้เรื่องประจุ
ทีนี้ ขอผมเพิ่มอย่างอื่นหน่อย
เราจะเพิ่มตัวต้านทานอีกตัว
เข้ากับโหนดของเรา
อย่างนั้น
และตอนนี้ มันจะมีกระแสไหลแบบนี้
ลองเรียกมันว่า i3
และตอนนี้ สมการนี้ใช้ไม่ได้อีกต่อไป
i2 กับ i2 ไม่จำเป็นต้องเท่ากัน
แต่สิ่งที่เรารู้คือว่า กระแสใดๆ ที่ไหลเข้า
ต้องออกมาจากโหนดนี้
เราจึงบอกได้ว่า i1 เท่ากับ i2 บวก i3

Czech: 
načež proteče a vyjde tudy.
Všechen proud,
který vteče dovnitř, vyteče ven.
Je to zákon zachování elektrického náboje,
a my víme,
že se ten náboj nikde nehromadí.
Tomuto budeme říkat proud i1
a tomuto proud i2.
Hned také víme,
že i1 rovná se i2.
To je zřejmé z důvodu zachování náboje.
Teď sem něco přidám,
k uzlu připojím další rezistor.
Takto.
Tudy teď také poteče nějaký proud.
Nazvěme jej i3.
Toto už teď neplatí,
i1 a i2 už nemusejí být totožné.
Nicméně víme,
že co vteče do uzlu
z něj musí také vytéct.
Můžeme říct,
že i1 se rovná i2 plus i3.

Bulgarian: 
и преминава, и излиза
от тази страна,
всичкият ток, който влиза навътре,
излиза навън.
Това е нещо,
което знаем –
това е от запазването
на заряда
и знаем, че зарядът
не се натрупва никъде.
Ще наречем този ток i1.
И ще наречем
този ток i2.
И знаем – можем просто
да запишем веднага – i1 е равно на i2
Това изглежда доста ясно
от аргумента ни за заряда.
Нека добавя
още нещо –
нека добавя още един
резистор към възела ни.
Ето така.
И сега ще има ток,
протичащ насам.
Ще наречем това i3.
И знам, че това
вече не върши работа,
тези i1 и i2 не са задължително
едни и същи.
Но знаем, че всеки ток,
който навлезе,
трябва да излезе
от този възел.
Можем да кажем,
че i1 е равно на i2 + i3.

English: 
and that goes across and
it comes out on this side,
all the current that comes in comes out.
That's something we know,
that's the conservation of charge,
and we know that the charge
does not pile up anywhere.
We'll call this current i1.
And we'll call this current i2.
And we know, we can just write
right away, i1 equals i2.
That seems pretty clear from
our argument about charge.
Now let me add something else here,
we'll add another resistor to our node.
Like that.
And this now, there's gonna be
some current going this way.
Let's call that i3.
And now this doesn't work anymore,
this i1 and i2 are not
necessarily the same.
But what we do know is
any current that goes in
has to come out of this node.
So we can say that i1 equals i2 plus i3.

Bulgarian: 
Това изглежда
доста разумно.
И, като цяло,
това, което имаме тук –
ако вземем целият ток,
който протича навътре,
той е равен на целият ток,
който изтича навън.
И това е законът
на Кирхоф за електричеството.
Това е един начин
да кажем това.
С математическото обозначение
ще кажем, че i навътре –
сборът на токовете,
течащи навътре –
това е знакът
за сбор –
е сборът на i навън.
Това е един израз на
законът на Кирхоф за електричеството.
Искам малко
да обобщя това.
Да кажем,
че имаме един възел
и имаме няколко жици,
които навлизат в него,
ето няколко жици,
свързани към един възел.
И във всяка от тях
навлиза ток.
Ще дефинирам
стрелките на тока –
това изглежда малко странно,
но не е проблем да го направим.

English: 
That seems pretty reasonable.
And in general, what we have here isn't,
if we take all the current flowing in,
it equals all the current flowing out.
And that's Kirchhoff's Current Law.
That's a one way to say it,
in mathematical notation,
we would say i in,
the summation of currents going in,
this is the summation sign,
is the summation of i out.
That's one expression of
Kirchhoff's Current Law.
So now I want to generalize
this a little bit.
Let's say we have a node,
and we have some wires going into it,
here's some wires connecting up to a node.
And there's current going into each one.
I'm gonna define the current arrows,
this looks a little odd,
but it's okay to do.

Korean: 
꽤 합리적인 추론입니다
일반적으로는
들어가는 전류의 총합은
나오는 전류의 총합과 같다는 것
이것이 바로 키르히호프의 전류 법칙입니다
이를 수학적으로 표현해보자면
들어가는 전류인 i in의 총합은
들어가는 전류인 i in의 총합은
이것은 모두 더해준다는 기호입니다
나오는 전류인 i out의 총합과 같습니다
이것은 키르히호프의 전류 법칙을
적는 하나의 방법입니다
이제 이것을 조금 더 일반화해봅시다
여기에 노드가 있다고 해봅시다
이 노드에 전류가 흘러 들어가는
몇 개의 도선이 있다고 해봅시다
이 도선에는 전류가 흘러 들어가고 있습니다
이렇게 화살표로 표시하겠습니다
조금 이상해 보일 수도 있지만
이해하기는 좋습니다

Thai: 
มันดูสมเหตุสมผลดี
และโดยทั่วไป สิ่งที่เรามีตรงนี้
ถ้าเราหากระแสที่ไหลเข้าทั้งหมด
มันจะเท่ากับกระแสทั้งหมดที่ไหลออก
และนั่นคือกฎกระแสของเคอร์คอฟ
นั่นคือวิธีบอกอย่างหนึ่ง
ในสัญลักษณ์ทางคณิตศาสตร์ เราบอกว่า i in
ผลบวกกระแสที่ไหลเข้า
นี่คือเครื่องหมายผลบวก
เท่ากับผลบวกของ i out
นั่นคือหน้าตาของกฎกระแสของเคอร์คอฟ
ทีนี้ ผมอยากทำให้ทั่วไปกว่านี้หน่อย
สมมุติว่าเรามีโหนด
และเรามีสายเข้าไปหามัน
และมีสายที่ต่อกับโหนด
และมีกระแสไปในแต่ละเส้น
ผมจะกำหนดลูกศรกระแส
มันดูแปลก แต่มันทำได้

Czech: 
To zní celkem rozumně.
Vezmeme-li všechen proud tekoucí dovnitř, 
tak je roven proudu tekoucímu ven.
To je První Kirchhoffův zákon,
pojednávající o proudu.
To je jeden způsob,
jak to říct.
Matematicky bychom to řekli
touto sumou proudů jdoucích dovniř…
Toto je znak sumy,
tedy součtu.
Suma proudů dovnitř
je rovna sumě proudů ven.
To je výraz pro První Kirchhoffův zákon.
Teď bych to chtěl trochu zobecnit.
Řekněme, že máme uzel,
do kterého vedou nějaké dráty,
tady jsou nějaké dráty
vedoucí do uzlu.
Tady je proud tekoucí do každého z nich.
Stanovím šipky směru proudu,
je to trochu zvláštní, ale dělá se to.
Všechny jdou dovnitř.

Thai: 
ทั้งหมดเข้าไป
และสิ่งที่กฎกระแสของเคอร์คอฟบอก
คือว่าผลบวกกระแส
ที่เข้าไปในโหนดนั้น
ต้องเท่ากับ 0
ลองดูกันว่ามันเป็นไปได้อย่างไร
สมมุติว่านี่คือ 1 แอมป์ และนี่คือ 1 แอมป์
และนี่คือ 1 แอมป์
และคำถมคือว่า อันนี้คืออะไร?
กระแสนั่นเป็นเท่าใด?
ถ้าผมใช้กฎกระแสของเคอร์คอฟ เขียนแบบนี้
มันบอกว่า 1 บวก 1 บวก 1
บวก i ไม่ว่า i ตรงนี้เป็นเท่าใด ต้องเท่ากับ 0
และสิ่งที่มันบอกคือว่า i เท่ากับลบ 3
มันบอกว่า ลบ 3 แอมป์ไหลเข้า
เท่ากับบวก 3 แอมป์ไหลออก
1 แอมป์, 1 แอมป์, 1 แอมป์ไหลเข้า

Korean: 
모든 전류가 흘러 들어가고 있습니다
키르히호프의 전류 법칙에 따르면
이 노드로 들어오는
전류의 총합은
0이 되어야 한다는 것입니다
이게 무슨 의미인지 생각해봅시다
이 전류가 1A, 이 전류가 1A
그리고 이 전류가 1A라고 합시다
그렇다면 이 도선에 흐르는
전류는 몇 A일까요
키르히호프의 전류 법칙에 따르면
들어오는 전류는 1+1+1+i로
이 총합은 0이 되어야만 합니다
따라서 i는 -3이 되어야 합니다
즉 -3A의 전류가 흘 러들어가고 있습니다
3A의 전류가 흘러 나가는 것과 같습니다
따라서 각각 1A의 전류가
3개의 도선으로 흘러 들어오고

Czech: 
Kirchhoffův zákon tvrdí,
že součet všech proudů tekoucích
do uzlu musí být nulový.
Podívejme se,
jak to funguje.
Řekněme, že toto je 1 ampér,
toto je 1 ampér a toto je 1 ampér.
Otázkou je, kolik je toto?
Jaký je tento proud?
Pokud použiji tuto podobu
Kirchhoffova zákona, ta tvrdí,
že 1 plus 1 plus 1 plus „i“
musí být rovno 0.
To znamená,
že toto „i“ je rovno −3.
Tečou sem −3 ampéry, což je to samé,
jako když 3 ampéry tečou ven.

English: 
All going in.
And what Kirchhoff's Current Law says
is that the sum of the currents
going into that node
has to be equal to zero.
Let's work out how that works.
Let's say this is one
amp, and this is one amp,
and this is one amp.
And the question is, what is this one?
What's that current there?
If I use my Kirchhoff's
Current Law, express this way,
it says that one plus one plus one
plus i, whatever this i
here, has to equal zero.
And what that says is
that i equals minus three.
So that says, minus three amps flowing in
is the same exact thing as
plus three amps flowing out.
So one amp, one amp, one amp comes in,

Bulgarian: 
Всичко навлиза навътре.
И законът на Кирхоф
за електричеството ни казва,
че сборът на всички токове,
навлизащи в този възел,
трябва да е равен
на 0.
Да видим как
работи това.
Да кажем, че това е един ампер
и това е един ампер,
и това е
един ампер.
И въпросът е
какъв е този.
Какъв е този ток тук?
Ако използвам закона на Кирхоф за електричеството, изразен така,
той казва,
че 1 + 1 + 1 + i – каквото е това i –
трябва да е равно на 0.
И това ни казва,
че i е равно на -3.
Това ни казва,
че -3 ампера, протичащи навътре,
е същото нещо като +3 ампера,
протичащи навън.
1 ампер, 1 ампер, 1 ампер влиза,

Thai: 
3 แอมแปร์ไหลออก
วิธีที่เราทำได้อีกอย่าง ใช้ได้เหมือนกัน
นี่คือวิธีบอกสิ่งเดียวกันสามวิธี
ผมมีสายหลายอันเข้าไปยังจังก์ชันอย่างนี้
และคราวนี้ ผมกำหนดกระแสไหลออก
สมมุติว่าผมกำหนดให้ทุกตัวไหลออก
และอันนี้ใช้ได้เหมือนกัน
ผลบวกของกระแส
คราวนี้ออกไป
ผมจะกลับไปตรงนี้ ผมจะเขียน เข้า
กระแสทั้งหมดที่เข้า
ต้องเท่ากับ 0 เช่นกัน
และคุณทำแบบเดียวกันได้
ถ้าผมให้ทุกตัวเป็น 1 แอมป์
แล้วถามว่า อันนี้ตรงนี้เป็นเท่าใด 
i ตรงนี้เป็นเท่าใด
กระแสที่ออกมา
มันคือ 1 บวก 1 บวก 1 บวก 1
ผมรู้ว่ามี 4
และพวกนั้นคือตัวที่ไหลออก

Czech: 
1 ampér, 1 ampér, 1 ampér tečou dovnitř,
3 ampéry tečou ven.
Stejně dobrý způsob,
jak to dělat…
Toto jsou tři stejně dobré způsoby.
Mám nějaké dráty
vedoucí takto do uzlu.
Tentokrát zadefinuji,
že proudy tečou ven.
Funguje to úplně stejně.
Součet proudů,
tektokrát vytékajících…
Vrátím se sem
a napíšu „dovnitř“.
Všechny proudy tekoucí dovnitř.
To musí být také nula.
Můžeš udělat to samé,
pokud jsou všechny rovny 1 ampér.
Ptám se, jaké je toto „i“,
tento výstupní proud.
Je to 1 plus 1 plus 1 plus 1 plus 1,
to jsou ty čtyři, které znám,
ty všechny směřují ven,
kolik je tedy ten poslední,
aby vyšla 0?

Korean: 
3A의 전류가 흘러나가는 것을 확인할 수 있습니다
이것이 우리가 표현할 수 있는 방안으로
앞에 있는 것들과 정확히 일치합니다
이들이 키르히호프의 전류 법칙을
표현하는 세 가지 방법입니다
그림처럼 하나의 노드로 들어가는
여러 개의 도선이 있다고 해봅시다
이번에는 전류가 나온다고 해봅시다
이번에는 전류가 나온다고 해봅시다
앞과 같은 방식으로 계산할 수 있습니다
나오는 전류들의 총합은
나오는 전류들의 총합은
여기에 적어보겠습니다
나오는 전류들의 총합은
똑같이 0이 될 것입니다
같은 예제를 풀어보자면
모든 도선에 1A의 전류가 흐른다고 한다면
이 도선에서 흘러 나가는
전류값 i는 무엇일까요
1A의 전류가 흐르는
4개의 도선과
4개의 도선과

Bulgarian: 
3 ампера излизат.
Друг еднакво валиден
начин да направим това –
това са три начина да кажем
точно същото нещо.
Имам много жици, стигащи до
едно кръстовище, ето така.
И този път определям
токовете да излизат,
да кажем, че дефинирам
всички тях да излизат.
И същото това нещо
върши работа.
Сборът от токовете –
този път излизащите,
ще се върна тук горе, ще запиша
всички навлизащи токове.
Това също трябва
да е равно на 0.
И можеш да направиш
същото упражнение.
Ако направя
всички тези по 1 ампер
и попитам какво е това тук,
какво е това i тук,
изходящият ток,
той е 1 + 1 + 1 + 1 –
тези са четирите,
които знам,
и тези излизат навън,

English: 
three amperes flows out.
Another way we could do it, equally valid,
this is just three ways to
say exactly the same thing.
I have a bunch of wires going
to a junction, like this.
And this time I define
the currents going out,
let's say I define them all going out.
And this same thing works.
The sum of the currents,
this time going out,
I'll go back over here, I'll write in,
all the currents going in.
That has to equal zero as well.
And you can do the same exercise,
if I make all these one amp,
and ask, what is this
one here, what is i here,
outgoing current,
it's one plus one plus one plus one,
those are the four that I know,
and those are the ones going out,

English: 
so what's the last one going
out, it has to equal zero.
The last one has to be
minus four equals zero.
So this is a current
of minus four amperes.
So that's the idea of
Kirchhoff's Current Law.
It's basically,
we've reasoned through
it from first principles,
because everything that comes in
has to leave by some route,
and when we've talked about it that way,
we ended up with this expression
for Kirchhoff's Current Law.
And we can come up with a slightly smaller
mathematical expression, if we say,
let's define all the
currents to be pointing in.
Some of them may turn out to be negative,
but then that's another way
to write Kirchhoff's Current Law.
And in the same way,
if we define all the currents going out,
and you actually have
your choice of any of
these three any time
you want to use these.
If we define them all going out.
This is Kirchhoff's Current Law,

Korean: 
나머지 하나의 전류값을 더하면
0이 될 것입니다
총합이 0이기 위해서는
마지막 전류값은 -4A여야 합니다
이것이 기본적인
키르히호프의 전류 법칙입니다
우리는 제1원칙으로부터
들어오는 모든 전류는
어떤 경로를 통해서라도
반드시 나가야 한다는 것을 배웠습니다
그리고 이것을
다양한 방법으로 표현한 것이
키르히호프의 전류 법칙입니다
이것을 조금 더 수학적으로
더 간소화하여 표현할 수 있는데
들어오는 전류의 총합은
0이라고 표현할 수 있습니다
이 값 중 일부는 음수일 수 있습니다
그것은 반대 방향임을 의미합니다
이것이 키르히호프의 전류 법칙을
표현하는 또 다른 방법입니다
같은 방식으로
모든 전류가 나온다고 가정할 수 있습니다
상황에 맞게 세 가지 표현 중
선택하여 이용할 수 있습니다
선택하여 이용할 수 있습니다
이것이 회로문제에서 자주 사용되는

Bulgarian: 
това е последното, което излиза,
а това трябва да е равно на 0.
Последното трябва да е
-4 – е равно на 0.
Това е ток от -4 ампера.
Това е идеята на
закона на Кирхоф за електричеството.
Тя е че –
разсъждавахме за нея
от първите принципи,
понеже всичко,
което навлезе,
трябва да излезе
по някакъв маршрут
и когато говорихме за това
по този начин,
получихме този израз
за закона на Кирхоф
за електричеството.
И можем да намерим
малко по-малък
математически израз,
ако кажем:
"Нека дефинираме всички токове
да сочат навътре."
Някои от тях
може да са отрицателни,
но това е друг начин
да запишем закона
на Кирхоф за електричеството.
И, по същия начин,
ако дефинираме всички токове
да излизат –
и имаш избор от всяко от тези три
всеки път, когато искаш да използваш това.
Ако ги дефинираме
да излизат,
това е законът
на Кирхоф за електричеството.

Czech: 
Poslední musí být −4,
aby vyšla 0.
Toto je proud −4 ampéry.
To je celý První Kirchhoffův zákon.
Je založen na tom, že co vteče dovnitř,
to vyteče nějakou cestou ven.
Když jsme o tom tak mluvili,
vyšel takový tvar
Kirchhoffova zákona proudu.
Stručnější matematický výraz nám vyjde,
když řekneme…
Definujme,
že všechny proudy jdou dovnitř.
Jeden z nich může vyjít záporný,
ale to je jen jiný způsob zápisu.
Stejně tak když určíme,
že všechny proudy míří ven,
vlastně si můžeš
mezi těmito třemi kdykoli vybrat.
Můžeme definovat,
že všechny jdou ven.
To je První Kirchhoffův zákon.

Thai: 
รวมกับอันสุดท้ายที่ออก มันต้องเท่ากับ 0
ตัวสุดท้ายต้องเป็นลบ 4 จึงจะเท่ากับ 0
นี่คือกระแสลบ 4 แอมแปร์
นั่นคือแนวคิดเรื่องกฎกระแสของเคอร์คอฟ
มันก็คือ
เราให้เหตุผลจากหลักพื้นฐาน
เนื่องจากทุกอย่างที่เข้ามา
ต้องออกไปสักทางหนึ่ง
และเราพูดถึงมันไปว่า
เราได้สมการนี้
เป็นกฎกระแสของเคอร์คอฟ
และเราได้พจน์ทางคณิตศาสตร์
ที่เล็กลง ถ้าเราบอกว่า
กำหนดให้กระแสทั้งหมดชี้เข้า
บางมันอาจกลายเป็นลบ
แต่นั่นก็คือการเขียน
กฎกระแสของเคอร์คอฟอีกวิธีหนึ่ง
และเช่นเดียวกัน
เรากำหนดให้กระแสไหลออกทั้งหมดก็ได้
คุณจึงมีตัวเลือกสามอย่าง
เมื่อใดก็ตามที่คุณใช้กฎ
ถ้าเรากำหนดทั้งหมดให้ไหลออก
นี่คือกฎกระแสของเคอร์คอฟ

English: 
and we'll use this all the time
when we do circuit analysis.

Bulgarian: 
И ще използваме това всеки път,
когато анализираме ел. вериги.

Korean: 
키르히호프의 전류 법칙입니다
커넥트 번역 봉사단 | 심미형

Thai: 
และเราใช้มันตลอดเวลา ตอนเราวิเคราะห์วงจร

Czech: 
Ještě jej využijeme při analýze obvodů.
