Circuit with capacitors

Capacitor in a circuit with a voltage:

Capacitor in series with a battery:

Polarized capacitor in series with a battery:

Polarized capacitor:

Capacitors in series:

Capacitors in parallel:

Edit and compile if you like:

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% Author: Izaak Neutelings (Februari, 2020)
% http://texample.net/tikz/examples/tag/circuitikz/
% http://texample.net/tikz/examples/circuitikz/
% https://www.overleaf.com/learn/latex/CircuiTikz_package
% http://texdoc.net/texmf-dist/doc/latex/circuitikz/circuitikzmanual.pdf
% http://repositorios.cpai.unb.br/ctan/graphics/pgf/contrib/circuitikz/circuitikzmanual.pdf
\documentclass[border=3pt,tikz]{standalone}
\usepackage{amsmath} % for \dfrac
\usepackage{physics}
\usepackage{tikz,pgfplots}
\usepackage[siunitx]{circuitikz} %[symbols]
\usepackage{xcolor}
\tikzset{>=latex} % for LaTeX arrow head
\colorlet{Icol}{blue!50!black}
\colorlet{Ccol}{orange!90!black}
\colorlet{pluscol}{red!60!black}
\colorlet{minuscol}{blue!60!black}
%\tikzstyle{charged}=[top color=blue!20,bottom color=blue!40,shading angle=10]
\tikzstyle{thick C}=[C,thick,color=Ccol,Ccol,l=$C$]
\tikzstyle{mybattery}=[battery1,l=$\Delta V$,invert]
\begin{document}
% CAPACITOR without battery
\begin{tikzpicture}
  \draw (0,2) to [short,*-] (3,2) to[thick C] (3,0) to [short,-*] (0,0);
  \node[below left] at (0,2) {$+$};
  \node[above left] at (0,0) {$-$};
  \node at (0,1) {$\Delta V$};
\end{tikzpicture}
% CAPACITOR with battery
\begin{tikzpicture}
  \draw (0,0) to[mybattery] (0,2) -- (3,2)
              to[thick C] (3,0) -- (0,0);
  \node at (-0.35,0.7) {$-$};
  \node at (-0.35,1.4) {$+$};
  \node at (3.3,0.65) {$-$};
 
 
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