\documentclass{standalone}
\usepackage[american]{circuitikz}
\usepackage{graphicx}
\usepackage{mathrsfs} 
\usepackage{latexsym,amssymb,amsmath}
\newcommand{\equal}{=}
\begin{document}
		\begin{circuitikz}
			\draw (3,4) to [V,l_=$\mathscr{F}\equal NI$] (3,2) 
			(3,2) to [R,l^=$\mathscr{R}_{g1}$, v_>=$\mathscr{F}_1$, color=green] (3,0)
			(3,2) -- (3,0)
			(3,0) -- (0,0)
			(0,4) to [R,l^=$\mathscr{R}_{g2}$, v_>=$\mathscr{F}_2$, color=red] (0,0)
			(6,4) to [R, l^=$\mathscr{R}_{g3}$,v_>=$\mathscr{F}_3$, color=blue] (6,0) 
			(6,0) -- (3,0)
			(0,4) -- (6,4);
			%	     \draw[thin, <-, >=triangle 45] (1.5,1.5) node[scale=2]{$\phi$}   ++(-90:0.5) arc (-90:100:0.5);
			\node (phi) at (1.25,0.5) {$\phi_1$};
			\draw[-stealth]  (1.25,2.5) to [bend left=90] (phi);  
			
			\node (phi) at (4.25,0.5) {$\phi_2$};
			\draw[-stealth]  (4.25,2.5) to [bend left=90] (phi);  
			\end{circuitikz}
%	\begin{circuitikz}
%		\draw (0,3) to [V,l_=$\mathscr{F}\equal NI$] (0,0) 
%		(0,3) to [R,l^=$\mathscr{R}_{1,thick}$, v_>=$\mathscr{F}_1$, color=red] (0,6)
%		(0,6) to [R, l^=$\mathscr{R}_{2,thin}$,v_>=$\mathscr{F}_2$, color=blue] (3,6) 
%		(3,6) -- (3,3)
%	    (3,3) to [R, l^=$\mathscr{R}_{3,thick}$,v_>=$\mathscr{F}_3$, color=red] (3,0) 
%	     (3,0) to [R, l^= $\mathscr{R}_{4,thin}$,v_>=$\mathscr{F}_4$, color=blue] (0,0)
%	     
%	     (1.5,3) node[scale=4]{${\circlearrowright}$}
%	     (1.5,3) node[scale=2]{${\mathbf{\phi}}$};
%		;\end{circuitikz}
%	\label{fig:q1fig}
\end{document}