# Thevenin Problem

## Homework Statement

Use thevenin techniques to find the equivalent circuit (Rth and Vth) to which the points A + B are attached.

## Homework Equations

Kirchoffs loop rules
V=IR

## The Attempt at a Solution

I have indicated my chosen loops in blue. I am not quit sure at this point how to apply kirchoffs loop rule to each of the loops so that I can determine Vth. the only loop I felt confident on was number 1 i.e. 1: 5V-40ΩI1+Vth. There so much going on in the circuit that its hard from me to determine which way current is flowing so that I can create a junction rule for the wire between the yellow points. Any help would be greatly appreciated!

#### Attachments

• thevenin problem.jpg
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phinds
Gold Member
2021 Award
So why not redraw the circuit so that it looks less confusing?

Also, your loops 1 and 2 are useless since they "loop" around open circuits, which are not really loops at all.

Last edited:
how do you purpose I re-draw it

phinds