Connect with us

Series Parallel Problem

Discussion in 'Electronics Homework Help' started by usr13493n, Dec 28, 2018.

Scroll to continue with content
  1. usr13493n

    usr13493n

    6
    0
    Dec 28, 2018
    How can I find the equivalent resistance?
    I tried R1||R5 R24|R3+R2 and R1-5||R2-3-4
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
    2,839
    Jan 21, 2010
    Since we can't see your circuit we can't tell.

    A simple general solution is to find a pair of resistors either in series or parallel and replace then with a single resistance of the calculated combined value. Repeat this process until there is only one resistor left.

    There are circuit topologies of resistors (I think the simplest has 5 resistors) where this process can't be used to completely solve it, but as I can't see your circuit...
     
  3. Harald Kapp

    Harald Kapp Moderator Moderator

    11,660
    2,696
    Nov 17, 2011
    Remedy: upload a circuit diagram of how your resistors are connected using the 'image' button #15 from the left in the text entry's menu bar.
     
  4. usr13493n

    usr13493n

    6
    0
    Dec 28, 2018
     

    Attached Files:

  5. usr13493n

    usr13493n

    6
    0
    Dec 28, 2018
     

    Attached Files:

  6. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
    2,839
    Jan 21, 2010
    That circuit can't be simplified using simple formulae for resistors in series and parallel.

    You need to employ another type of circuit analysis.

    What other methods do you know?
     
  7. AnalogKid

    AnalogKid

    2,515
    718
    Jun 10, 2015
    steve - in this forum is it ok to suggest a theorem by name without giving away the details?
     
  8. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
    2,839
    Jan 21, 2010
    I guess so. I was hoping the OP would volunteer what he has been taught.
     
  9. usr13493n

    usr13493n

    6
    0
    Dec 28, 2018
    Kirchhoff, Superposition Theorem, Series/Parallel, Current Divider, Voltage Divider and System equations
     
  10. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
    2,839
    Jan 21, 2010
    Can you apply KVL and KCL to this circuit? Did you learn to use this to determine all voltages and currents in a circuit?
     
  11. usr13493n

    usr13493n

    6
    0
    Dec 28, 2018
    I tried to use a System of equations using the Kirchhoffs Laws but nothing
     
  12. Harald Kapp

    Harald Kapp Moderator Moderator

    11,660
    2,696
    Nov 17, 2011
    Try again. That is the way to do it. Find currents and voltages in the circuit, then use the current through the voltage source to find the equivalent resistance using Ohm's law.
     
  13. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,497
    2,839
    Jan 21, 2010
    Perhaps you can post the equations you derived and we can take a look at them. You may need to post any markup you've made on the original diagram if you have added any new non-obvious variables.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-