Ratio of resistance in parallel and series

  • #1

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
 

Answers and Replies

  • #2
tiny-tim
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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:
 
  • #3
berkeman
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(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?
 
  • #4
tiny-tim
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Hi berkeman! :wink:

Yes, just above where I'm now typing, on the Reply to Thread page. :smile:
 
  • #5
berkeman
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Hmm. I see this instead. Wonder what I need to do to see the tags...

Tags
None
How many do you see?
 
  • #6
tiny-tim
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ah, you're still on the main page, i'm on the Reply to Thread page (click "QUOTE" or "Go Advanced") :wink:
 
  • #7
berkeman
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Ohhh!! I understand now. Thanks.

[/hijack]
 

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