Understanding Valid Connections: Get the Help You Need

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Discussion Overview

The discussion revolves around understanding valid connections in electrical circuits, particularly focusing on the concepts of series and parallel configurations. Participants seek clarification on how to analyze these connections theoretically, without physical components.

Discussion Character

  • Homework-related
  • Exploratory
  • Technical explanation

Main Points Raised

  • One participant expresses uncertainty about the validity of two connections shown in an image and requests an explanation of the underlying concepts.
  • Another participant suggests testing the connections by placing a resistor across the terminals to compute current and voltage, proposing the use of differing current and voltage sources in series and parallel as further tests.
  • A different participant mentions a lack of physical components for testing but indicates they are learning about series and parallel resistors and equivalent resistances.
  • One participant clarifies that physical components are not necessary and recommends drawing a schematic with a resistor to apply Kirchhoff's Current Law (KCL) or Kirchhoff's Voltage Law (KVL) to analyze the connections.

Areas of Agreement / Disagreement

The discussion does not reach a consensus, as participants express different approaches to understanding the problem, with some focusing on theoretical analysis while others mention practical testing methods.

Contextual Notes

Participants have not established specific assumptions or definitions regarding valid connections, and there are unresolved aspects related to the application of KCL and KVL in the proposed scenarios.

Lildon
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Homework Statement



http://i134.photobucket.com/albums/q100/megajette2/2.png

I'm not really sure about this. If someone could just explain the concept so i can figure it out, it would be much appreciated. Neither one of them looks like a valid connection, but i have no experience with this.
 
Last edited:
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Test: put a resistor across the terminals and determine if you can compute a current and voltage (obviously voltage will = current x R).

Put two differing current sources in series and try to do the same. Can you come up with a current?

Try to do the same with two differing voltage sources in parallel. What then?
 
I don't have any parts to test on. I was just learning about in series and parallel resistors, but mostly about finding equivalent resistors.
 
I don't mean use actual components. Draw the schematic with the resistor shunting the network terminals and try to write KCL or KVL equations that aren't self-contradictory.
 

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