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Asked in GSEB Board March 2020 · Conservation laws behind Kirchhoff's rules
Idea: in a steady state, charge can neither pile up at a junction nor disappear from it.
So the charge arriving per second equals the charge leaving per second: Σ Iᵢₙ = Σ Iₒᵤₜ.
This is conservation of electric charge applied at a junction.
So the junction rule represents conservation of charge.
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