kirchhoff's law

Circuit - A circuit is a closed loop in which current flows through conductor, resistors, etc.

Node - A node is the junction where two or more conductors or any other element of the electrical circuit meet and are called a node.

Loop - A loop is a closed circuit in which the elements or nodes related to the circuit are not more than one.
 
Kirchhoff law-
In 1845, a German physicist named Gustav Kirchhoff proposed two rules related to voltage and current to solve these problems in electrical circuits. Both of these rules are called Kirchhoff's Circuit Laws. Like Ohm's law, Kirchhoff's laws have great importance in the field of electrical engineering


Kirchhoff stated the two rules of the circuit are as follows -
1. First law - Kirchhoff's current law- KCL
2. Second law - Kirchhoff's law of law (KVL)

Kirchhoff's first rule Or KCL Law-
According to KCL The algebraic sum of currents found at any point or junction or node in an electrical circuit will be zero.

In other words, the sum of the currents coming at a pact or junction (where more than two conductors meet) in the electric circuit is equal to the sum of the currents going from there.

It is also called Kirchhoff's "Node Rule" "Rule of Junction" or "Point Rule". It is based on the law of conservation of charge.

 

i1 + i2 + i3 - i4 - i5 - i6 - i7 - i8-i9 = 0
OR 
i1 + i2 + i3 = i4 + i5 + i6 + i8+i9
Kirchhoff's second rule Or KVL -
Definition of Kirchhoff's voltage law of Kirchhoff's law - "The algebraic sum of the electric carrying force in a closed loop or circuit is equal to the algebraic sum of the potentials generated at the ends of the resistors of that circuit.

In other words, the algebraic sum of all the voltages of a loop is zero. This is also called Kirchhoff's loop rule. It is based on the law of conservation of energy.


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