Kirchoff’s Rules

 

Junction rule (aka point rule)

 

At any junction point, the sum of all currents entering the junction must equal the sum of all currents leaving the junction.

 

Loop Rule

 

The sum of the changes in potential around any closed path (loop) of a circuit must be zero.

 

 

 

 

Procedure:

 

1.     Label current directions (arbitrary)

2.     Choose loop directions (arbitrary)

3.     Write junction and loop rule equations