At any node in a circuit, the total of currents following into that node is suitable the total of currents following of that node.
The Kirchhoff’s Current Law,(KCL):
Kirchoff’s Current Law (KCL) can be stated in words as the sum of all currents flowing into a node is zero. Or moreover, the sum of all currents leaving a node must be zero.
The algebraical add of all the currents coming into and going a junction is capable zero.
Kirchhoff’s Current Law Equation:
In the given, fig I1, I2, I3, 4, I5, I6, I7 are different currents in which some current leaving the point (A) and some current meeting at a point (A). We take the incoming current as positive and outgoing current as negative according to Kirchhoff Current Law (KCL) the equation will be as follow.
I1+(- I2)+ I3+I 4+(- I5)+(- I6)+(- I7) = 0
I1– I2+ I3+I4– I5– I6-I7= 0 —————(1)
This is called kirchhoff’s current law (kcl) equation.
I1+ I3+ I 4 = I2+ I 5+ I 6+I 7 ———–(2)
From equation 2 it is clear that the sum of currents following towards points (A) is equal to the sum of the current following away from it.