\documentclass[12pt,a4paper]{article}

\usepackage{graphicx}

\usepackage[utf8]{inputenc}
\usepackage[T1,T2A]{fontenc}
\usepackage[serbian]{babel}

\begin{document}

Ovde ćemo ubaciti jednu sliku

\begin{figure}[h!]
    \centering
    \includegraphics{recover.pdf}
    \caption{Otpornik $R_E$}
    \label{slika:ime}
\end{figure}

Ovde smo ubacili jednu tabelu
\begin{table}[h!]
    \centering
    \begin{tabular}{|c|cc|}
        \hline
        a & b & c \\
        \hline \hline
        d & e & f \\
        \hline
    \end{tabular}
    \caption{Primer jedne tabele}
    \label{tabela:ime}
\end{table}

\end{document}
