Equivalent Resistance/ resistors in series and parallel

  • Thread starter OmegaFury
  • Start date
  • #1
OmegaFury
28
0

Homework Statement


Find R_AB in the network. Look at attached file "Problem"


Homework Equations


R_S= R1+R2+R3+...Rn (for series resistors)
1/RP= 1/R1 + 1/R2 + 1/R3 + 1/Rn... (for parallel resistors)
V=IR (ohm's law)


The Attempt at a Solution


Look at attached file "Problem Attempt"

I know I'm probably not looking at these circuits the correct way, because each time I try to solve these problems, I find different equivalent resistances depending on the order by which I use the series resistor and parallel resistor formula. I really want to know the correct way to read the diagram, because that is half the battle, and it would guide my calculations a lot more smoothly.

I'm also stuck. What do I do with that 9ohms?
 

Attachments

  • Problem.jpg
    Problem.jpg
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  • Problem attempt.jpg
    Problem attempt.jpg
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Last edited:

Answers and Replies

  • #2
Saitama
4,244
93
4 ohm and 14 ohm resistors should be in series. Redraw your sketch.
 

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