In Physics and Electrical Engineering,
மின் பொறியியல் துறையில்
Kirchhoff's laws are widely being used.
Let's learn about Kirchhoff's laws
in this video.
There are 2 Kirchhoff's circuit laws.
One is Kirchhoff's current law (கிர்ச்சாஃபின் மின்னோட்ட விதி)
Another one is Kirchhoff's voltage law (கிர்ச்சாஃபின் மின்னழுத்த விதி)
Let's take a look at  Kirchhoff's current law.
Consider a current junction (மின் சந்திப்பு)
In this current junction,
currents i2 and i3
flows into that node.
At the same time,
currents i1 and i4
flows out of that node.
Now in this junction,
the sum of entering currents i2 and i3
and the sum of exiting currents i1 and i4
are equal
says the Kirchhoff's current law.
Similarly, in a current junction
it doesn't matter how many currents are flowing,
the sum of entering currents
and the sum of exiting currents
are always equal according to this law.
Now, let's see Kirchhoff's voltage law.
Consider a closed circuit (மூடப்பட்ட மின்சுற்று).
In this closed circuit,
v1, v2, v3 and v4
are voltages (மின்னழுத்த வேறுபாடுகள்).
The sum of all these 4 voltages
is always zero according to Kirchhoff's voltage law.
These laws were first described by
Gustav Robert Kirchhoff, a German physicist
in 1845.
See you all again in another video.
Thanks for watching.
