**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