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first law or point rule or junction rule or current rule : –
According to this law in electric circuit the algebraic sum of all current unceting at a point is equal to zero
i.e Σ i = 0
This law is based on charge conservation this is valid for AC as well as DC this valid in open path as well as closed path .
Explanation :-
kirchhoff’s assume that current flowing to words the point is taken to be positive and current flowing away from the point is taken to be negative
Note : – junction neither behave as a source or behave as a sink
Q find value of i
