Electrical networks(linear algebra)

AI Thread Summary
To determine the currents in electrical networks when they are not labeled, one can assign currents arbitrarily in any direction. The direction of the currents can be adjusted later if calculations yield negative values, indicating the opposite direction. Understanding the principles of voltage drop across resistors and conservation of charge is essential for solving these problems. The discussion emphasizes the connection between electrical networks and physics concepts. The topic ultimately highlights the need for a visual representation to effectively analyze the circuit.
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Homework Statement



Determine the currents in the various branches.

Then there is a picture of the network which has batteries, resistors, and nodes.

Most of the problems have the currents labeled.

My question is when the currents are not labled how do you determine where to put them and what direction to give them?

Homework Equations


No equations.


The Attempt at a Solution



By looking at the the various electrical networks in the book it looks like you can put the currents anywhere and in any diretion.
 
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Without the picture, this question makes no sense at all! In any case, it looks like a physics problem to me. The whole point is to find the currents using such physics laws as the drop in voltage over a resistor and "conservation of charge".

I'm going to move this to physics homework.
 
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