Kirchhoff's Current Law (KCL)
The current entering any junction is equal to the current leaving that junction. i1 + i4 = i2 + i3
This law is also called , Kirchhoff's point rule, Kirchhoff's junction rule (or nodal rule), and Kirchhoff's first rule.
The principle of conservation of electric charge implies that:
At any point in an electrical circuit that does not represent a capacitor plate, the sum of currents flowing towards that point is equal to the sum of currents flowing away from that point.
Adopting the convention that every current flowing towards the point is positive and that every current flowing away is negative (or the other way around), this principle can be stated as:
Attached Image
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I is the amperage (Current)
n is the total number of currents flowing towards or away from the point.
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