Kirchhoff’s Current Law - Rule of Junctions
Directions: ​For the set-ups A through D below, use Kirchhoff’s Current Law, the rule of junctions, to
find the unknown current.
1. Set-up A
a. I​1​ = 2.0 A
b. I​2​ = 3.2 A
c. I​3​ = _____ A
2. Set-up A
a. I​1​ = _____ A
b. I​2​ = .048 A
c. I​3​ = .114 A
3. Set-up A
a. I​1​ = 5 A
b. I​2​ = _____ A
c. I​3​ = 7 A
4. Set-up B
a. I​1​ = 5.15 A
b. I​2​ = 2.33 A
c. I​3​ = _____ A
5. Set-up B
a. I​1​ = _____ A
b. I​2​ = .0087 A
c. I​3​ = .0163 A
6. Set-up C
a. I​1​ = 1.5 A
b. I​2​ = 2.5 A
c. I​3​ = 1.0 A
d. I​4​ = _____ A
7. Set-up C
a. I​1​ = 0.08 A
b. I​2​ = _____ A
c. I​3​ = 0.55 A
d. I​4​ = 0.73 A
9. Set-up D
a. I​1​ = 0.115 A
b. I​2​ = _____ A
c. I​3​ = 0.261 A
d. I​4​ = 0.378 A
e. I​5​ = 0.073 A
10. Set-up D
a. I​1​ = 5.51 A
b. I​2​ = 3.99 A
c. I​3​ = 3.37 A
d. I​4​ = _____ A
e. I​5​ = 2.77 A