How do Kirchhoff's Rules apply to a circuit with multiple resistors in series?

[Sylvia]

Homework Statement

[/B]
Consider the circuit above. You are given the following measured values:
V = 1.5 V
R1 = 100

R2 = 100

R3 = 50

R4 = 50

R5 = 50

Homework Equations

Kirchhoff's Loop Rule and Junction Rule

The Attempt at a Solution

I tried setting this up using the junction and loop rule.
At the first junction (between R1 and R3), I have I1 = I2 + I3. At the second junction, after R5, I have I5 + I2 = Io (Io is the current entering the battery again).
I do not understand what the loop rule should be written as and then how to put it all together. Please help!

 

[ehild]

Your I5 and I3, and also Io and I1 are related - how?

What does the Loop Rule state?

 

[Sylvia]

The loop rule states that the sum of the potential differences around the circuit is 0. Is I3 = -I5? And also I1 = -Io?

 

[ehild]

The loop rule states that the sum of the potential differences around the circuit is 0. Is I3 = -I5? And also I1 = -Io?

The loop rule states that the sum of potential differences is zero around a loop.

I3 = - I5 would mean that the current flows into R4 from both sides and the charges accumulate there. Is it possible? The current flows through a resistor, enters at one terminal and leaves at the other. What do you know about the current flowing through resistors connected in series?