kirchhoff's junction law

Question

Kirchhoff's junction law expresses conservation of?

RankGuru · Accepted Answer

1. **Kirchhoff's First Law (KCL)**: At any junction (node) in an electrical circuit, the sum of currents entering the junction is equal to the sum of currents leaving the junction.
2. **Principle**: Total current inflow = Total current outflow.
3. **Underlying Physics**: Current is the rate of flow of charge. If the sum wasn't zero, charge would accumulate at a point indefinitely, which is impossible in steady-state conduction.
4. **Conclusion**: This law is a direct consequence of the **law of conservation of charge**.

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kirchhoff's junction law

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