\documentclass{beamer}

\usepackage[T1]{fontenc}
\renewcommand{\familydefault}{\sfdefault}
\title{Test}

\begin{document}

\begin{frame}[t]{Title}
  \begin{itemize}
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
    \item Test
  \end{itemize}
\end{frame}

\end{document}