Kirchhoff’s Laws include two fundamental principles in electrical circuit analysis:

- Kirchhoff’s Current Law (KCL) (Kirchhoff’s First Law or Kirchhoff’s 1st Law) &
- Kirchhoff’s Voltage Law (KVL) (Kirchhoff’s Second Law or Kirchhoff’s 2nd Law).

These principles serve as essential tools for evaluating complicated electrical circuits, allowing engineers & researchers to predict & comprehend the behavior of circuits in various configurations. Kirchhoff’s Laws are widely applied in

- Electronics engineering,
- Electrical engineering, &
- Physics for circuit analysis & design.

**What does Kirchhoff’s Current Law (KCL) State?**

Kirchhoff’s current law states that the algebraic sum of current entering into a node (or) a loop must be equal to the algebraic sum of current flowing out of it.

**What is Node?**

**What is Node?**

A node is a junction, connector, or terminal in a circuit that connects two or more branches by joining or connecting circuit components. A dot represents a node.

In an electrical circuit, the term “Node” typically refers to

the joining or intersecting of two or more components, such as cables, that conduct current. A closed circuit path is also necessary for current to flow through a node, either in or out.

According to the node currents from the above diagram,

The 3 currents entering the node in this case,

- I
_{1}, I_{2}, and I_{3}all have positive values, whereas - I
_{4}and I_{5}have negative values,

the two currents leaving the node.

As a result, the equation can also be rewritten,

**What is the other name of Kirchhoff’s Current Law?**

Kirchhoff’s Current Law is also called as Kirchhoff’s First Law.

**Application of KCL:**

KCL is used to calculate the amount of current passing through each electronic component in a circuit. By adjusting the component’s resistance, we can alter the component’s current according to KCL law.