Kirchhoffs_laws_for_Electrical_ circuits.pptx

Kirchoff's law for Electrical circuits.

1. Kirchhoff’s Laws Kirchhoff’s Current Law (KCL) – Algebraic Sum of all the Currents Meeting at a Node is Zero. Mathematically , Where N is the Number of Branches connected at the node. = current entering or leaving the node Sign Convention This law is based on the conservation of Charge .  

2. It is helpful in combining the current source in parallel. Note - A circuit can not contain two different current Sources of different value in Series, otherwise KCL will be violated.

3. Kirchhoff’s Voltage Law (KVL) – Algebraic sum of Voltages in a Loop is equal to Zero . Mathematically , Where M is the Number of Voltages in the Loop or the No. of Branches in Loop. Sign Convention This law is based on the conservation of Energy .  

4. KVL is helpful in combining the voltage sources in Series. NOTE- A circuit can not contain two voltage source in parallel unless they have same voltage.

5. Summary Kirchhoff’s Current Law (KCL) – Algebraic Sum of all the Currents Meeting at a Node is Zero. This law is based on the conservation of Charge . Kirchhoff’s Voltage Law (KVL) – Algebraic sum of Voltages in a Loop is equal to Zero . This law is based on the conservation of Energy .