Kirchhoffs Current Law/Junction Law

 

Kirchhoff’s Current Law

Question: State and explain Kirchhoff’s Current Law

OR

State and explain Kirchhoff’s First Law

OR

State and explain Junction Law

 

Statement: “At junction the algebraic sum of the currents is zero.”

Sign Conventions:

At the junction

1.  Arriving current considered as positive

2.  Leaving current is considered as negative

Explanation:

At the junction the arriving currents are I₁, I₃ and I₆ and

The leaving currents are I₂, I₄ and I₅

According to KCL

I₁-I₂+I₃-I₄-I₅+I₆ = 0

I₁+I₃+I₆ = I₂+I₄+I₅

Thus, the total current flowing towards the junction is equal to the total current flowing away from the junction.