Ratio of resistance in parallel and series

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Homework Help Overview

The problem involves two resistors, R1 and R2, connected to a voltage source, with the task of finding the ratio R2/R1 based on the currents in series and parallel configurations. The context is electrical circuits, specifically focusing on resistance in series and parallel arrangements.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • The original poster attempts to understand the relationship between the currents in series and parallel configurations and how they relate to the resistances. A participant inquires about the formulas being used for the currents in both configurations.

Discussion Status

The discussion is ongoing, with participants engaging in clarifying the use of specific tags and formulas. There is an indication of helpful guidance being offered regarding the visibility of tags, but no explicit consensus on the problem-solving approach has been reached yet.

Contextual Notes

There appears to be some confusion regarding the visibility of certain features in the forum interface, which may affect the discussion. The original poster has expressed difficulty in understanding how to approach the problem.

mitsuruangel
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Homework Statement


Two resistors R1 and R2, where R1 > R2, are connected to a voltage source with voltage V. When the resistors are connected in series, the current is Is. When the resistors are connected in parallel, the current from the source is Ip = 8.0Is. What is the ratio R2/R1?
I have played with this and I don't understand how to get it. Any help would be awsome
 
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Welcome to PF!

Hi mitsuruangel! Welcome to PF!

(try using the X2 tag just above the Reply box :wink:)

What formulas are you using for Ip and Is, as a function of V R1 and R2 ? :smile:
 


tiny-tim said:
(try using the X2 tag just above the Reply box :wink:)


I'm not seeing any tags in my view, tiny. Do you see some?
 
Hi berkeman! :wink:

Yes, just above where I'm now typing, on the Reply to Thread page. :smile:
 
Hmm. I see this instead. Wonder what I need to do to see the tags...

Tags
None

How many do you see?
 
ah, you're still on the main page, I'm on the Reply to Thread page (click "QUOTE" or "Go Advanced") :wink:
 
Ohhh! I understand now. Thanks.

[/hijack]
 

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