I currently have

      \draw (0,0)
      to[V,v=$5V$] (0,4) % The voltage source
      to[R=$3.9$\si{\ohm}] (4,4)
      to[R=$19\si{\ohm}$] (4,0) % The resistor
      to[short] (3,0)
      to[short] (3,.5) 
      to [R=$33$\si{\ohm} (1,.5)
      to [short] (1,.5)
      to[short] (1,0) 
      to [short] (1,-.5)
      to [R=$69$\si{\ohm}] (3,-.5)
      to [short] (3,-0.5)
      to[short] (3,0)

I can't figure out how to finish the circuit, any help is appreciated, thanks!

  • Welcome to TeX.SX! Please note that it is preferred if the provided code can be run as a complete document (so includes \documentclass, the necessary \usepackages and \begin{document} and \end{document}), while still being as minimal as possible. This way people can help you faster and you're saving everyone who's interested in helping you from retyping those parts of a document. – Skillmon Sep 18 at 7:15
  • 1
    Also, please note that the correct way to use siunitx to typeset values with a unit is by using \SI{3.9}{\ohm} instead of 3.8\si{\ohm} or $3.7$\si{\ohm}. This way proper spacing and flexible number formatting is ensured (or, if in circuitikz by using it's syntax as shown in @Zarko's answer). – Skillmon Sep 18 at 7:17

Welcome to TeX.SE!

You are almost done ... I only correct syntax for resistors' values using option siunitx at loading circuitikz package, push parallel resistors' values on opposite sides and add missing line for closing circuit loop:


\draw (0,0) to[V=5<V>]    (0,4) % The voltage source
            to[R=3.9<\ohm>] (4,4)
            to[R=19<\ohm>]  (4,0) % The resistor
            to[short]       (3,0)
            to[short]       (3,.5)
            to [R,a=33<\ohm>] (1,.5)  |-  (0,0) % <---
      (3,0) to[short]       (3,-.5)
            to [R=69<\ohm>] (1,-.5)             % <----
            to [short]      (1,0);

enter image description here

| improve this answer | |

This answer shows how siunitx should be used to typeset numbers with units (if the siunitx option of circuitikz isn't used, or outside of cicruitikz, as the circuitikz syntax is already shown by @Zarko) as well as the usage of coordinates to ease the process of positioning things (plus relative positioning by using the ++ syntax).

The label of bipoles can be switched to the other side by using l_=<label> instead, so for a resistor use R, l_=<label> instead of R=<label>. I also flipped the voltage direction by using v<=<label> instead of v=<label>, and placed junctions by using -*.



  \draw (0,0) coordinate (start)
    to[V,v<=\SI{5}{\volt}] ++(0,4) % The voltage source
    to[R=\SI{3.9}{\ohm}] ++(4,0) coordinate (topright)
    to[R=\SI{19}{\ohm}] (start-|topright) % The resistor
    to[short,-*] ++(-1,0) coordinate (pright)
    to[short] ++(0,.5)
    to[R,l_=\SI{33}{\ohm}] ++(-2,0) coordinate (tmp)
    to[short,-*] (start-|tmp) coordinate (pleft)
    to[short] ++(0,-.5) coordinate (tmp)
    to[R=\SI{69}{\ohm}] (tmp-|pleft)
    to[short] (pleft)
    to[short, -.] (start) % the `-.` ensures there is no gap here

enter image description here

| improve this answer | |

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