How to calculate the resistance in a combined circuit

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Homework Help Overview

The original poster attempts to calculate the total resistance in a combined circuit, referencing a specific circuit layout. The subject area involves circuit analysis, particularly focusing on series and parallel resistor configurations.

Discussion Character

  • Exploratory, Mathematical reasoning

Approaches and Questions Raised

  • The original poster presents calculations for total resistance in both series and parallel arrangements, questioning the transition from series to parallel configurations. Some participants affirm the calculations without further elaboration.

Discussion Status

The discussion includes affirmations of the original poster's calculations, indicating a level of agreement among participants. However, no new insights or alternative approaches have been introduced, and the conversation remains focused on the calculations presented.

Contextual Notes

No explicit constraints or additional information have been noted in the discussion, and the focus remains on the calculations provided by the original poster.

Daniel2244
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Homework Statement


Work out the total resistance of a combined circuit.
https://gyazo.com/935b96ff63689e2bff852f29ea48bf90 - picture of circuit layout
upload_2018-3-7_12-46-18.png

Homework Equations


Rt=R1+R2+Rn...
R=V/I
1/RT=1/R1+1/R2+1/Rn...

The Attempt at a Solution


RT=R1+R2 =100+150=250Ω for the resistors in series.
1/RT=1/R1+1/R2 = 1/RT=1/250Ω+1/200=9x10-3 RT=1/9x10-3=111.1Ω
I added the resistors in series to make it a parallel circuit.
 

Attachments

  • upload_2018-3-7_12-46-18.png
    upload_2018-3-7_12-46-18.png
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Physics news on Phys.org
Looks good.
 
Your calculations look fine.
 
TSny said:
Looks good.
Thanks
 
gneill said:
Your calculations look fine.
Thanks
 

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