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Generalized Current Divider Formula Corollary 1 The current of a certain branch (Is ) is the total current (I) scaled by the ratio between total resistance (R) and branch resistance (Rs ). R Is = I Rs Proof. Voltage across one branch and the whole mesh is the same. (They are the same two points in the circuit topology) I derived this formula to simplify calculations to multiple branches, but I never saw it taught in circuit classes. Maybe the professors/educators expect you to do it two at a time and cascade them. 1