## Kirchhoff Law for Electrical Engineering

For complex circuit computations, the following two laws first stated by Gutsav R. Kirchhoff (1824-1887) are indispensable.**Kirchhoff's First Law (Point or Current Law)**

The sum of the currents entering a junction is equal to the sum of the currents leaving the junction.

i.e., Sum of Currents entering = Sum of currents leaving.

**Kirchhoff's**

**Second Law (Mesh or Voltage Law)**

The sum of e.m.f. (rise of potential) around any closed loop of a circuit equals the sum of the potential drops in that loop.

Considering a rise of potential as positive (+ ve) and a drop of potential as negative (-ve), the algebraic sum of potential differences (voltages) around a closed loop of a circuit is zero.

**Sum of E - Sum of IR drops = 0**(around closed loop) i.e.

**Sum of E = Sum of IR**or

**Sum of Potential rises = Sum of potential drops**

## Applications of Kirchhoff s Laws

**Kirchhoff's laws**may be employed in the following methods of solving networks:

1. Branch-current method.

2. Maxwell's loop (or mesh) current method.

3. Nodal voltage method.

**Also, See**- How to Read Resistor Color Code

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**Kirchhoff Law for Electrical Engineering**" will help you in your preparation. if you have any suggestion and request, you can tell us through the comment here.

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