# How do I draw a parallel resistors in series with other resistors?

I currently have

\begin{figure}[H]
\centering
\begin{circuitikz}
\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)
\end{circuitikz}
\end{figure}


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. Sep 18 '20 at 7:15
• 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). Sep 18 '20 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:

\documentclass[margin=3mm]{standalone}
\usepackage{siunitx}
\usepackage[siunitx]{circuitikz}

\begin{document}
\begin{circuitikz}
\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);
\end{circuitikz}
\end{document}


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 -*.

\documentclass[border=3.14]{standalone}

\usepackage{siunitx}
\usepackage{circuitikz}

\begin{document}
\begin{circuitikz}
\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)
(pright)
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
;
\end{circuitikz}
\end{document}