The circuit you uploaded appears to be a mesh analysis problem. Based on your comments, it looks like you're trying to analyze current flows (denoted as $I_1$, $I_2$, and $I_3$) through different loops, and the key misunderstanding seems to be about how resistors affect current in each mesh.

Here's the analysis:

1. Mesh Currents:

   • $I_A$, $I_B$, and $I_C$ appear to be the mesh currents for each loop.
   • These currents will pass through the resistors in their respective loops, and they interact with each other at shared resistors.

2. Resistors:

   • For $I_A$ (left loop): The current passes through the 7V source, a 1Ω resistor, and the shared 2Ω resistor with $I_C$.
   • For $I_B$ (top loop): The current passes through a 1Ω resistor, a 2Ω resistor, and the shared 3Ω resistor with $I_C$.
   • For $I_C$ (bottom loop): The current passes through a 1Ω resistor, a 2Ω resistor, and the shared 7Ω resistor (parallel branch).

3. Mesh Equations: You need to apply Kirchhoff's Voltage Law (KVL) in each loop:

   • Loop 1 (left loop): $-7V + I_A(1Ω) + (I_A - I_C)(2Ω) = 0$
   • Loop 2 (top loop): $I_B(1Ω) + (I_B - I_3)(3Ω) + I_B(2Ω) = 0$
   • Loop 3 (bottom loop): $I_C(1Ω) + (I_C - I_A)(2Ω) + 7Ω = 0$

These equations can be solved to find the values of $I_A$, $I_B$, and $I_C$, which represent the mesh currents for each loop.

You mentioned that dividing $I_1$ across 8 resistors is incorrect; based on the diagram, you are right: each current only passes through its own set of resistors and shared resistors. Therefore, you should focus on applying KVL and accounting for shared resistances correctly.

Let me know if you'd like me to go through the detailed steps of solving the system of equations!

Here are some related questions to expand on this concept:

1. How does Kirchhoff's Current Law (KCL) apply to the nodes in this circuit?
2. What happens to the currents when resistors are shared between two meshes?
3. How would the analysis change if one of the resistors was replaced with a different value?
4. Could you explain the role of the voltage source in determining the direction of the current?
5. How would adding a new resistor to one of the loops affect the overall current distribution?

Tip: When analyzing circuits, always look for shared resistances between loops. These shared resistors are crucial for setting up the correct mesh current equations.