Kirchhoff's Laws and Their Applications
- According to Kirchhoff’s first law. The algebraic sum of currents as a junction is zero.
- Kirchhoff’s first law is in accordance with law of conservation of charge.
- According to Kirchhoff’s second law the algebraic sum of potential across the elements of circuit is zero.
- Kirchhoff’s second law is in accordance with law of conservation of energy.
View the Topic in this video From 39:56 To 59:40
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There are two Kirchhoff's laws for solving complicated electrical circuits
(i) Junction Rule
The algebric sum of all currents meeting at a junction in a closed circuit is zero, i.e. ∑I = 0.
This law follows law of conservation of charge.
(ii) Loop Rule
The algebric sum of all the potential differences in any closed circuit is zero, i.e.
∑V = 0 ⇒ ∑E = ∑IR