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\begin{tikzpicture}
\draw (0,0) node[ground]{} to[R=$R_B$] ++(0,2) coordinate(a)
-- ++(0,1) node[op amp, anchor=+](A){}
(a) to[R=$R_A$, *-] (a-|A.out) -- (A.out);
\end{tikzpicture}

So I am trying to recreate this picture and this is my code so far,can anyone help I am not quite good with ...

Crosspost (in German).

Can you please show, what you already have? It would be also useful, if you'd ask a concrete questions. Do-it-for-me questions are usually less successful than concrete questions.

To be honest I need to create this for school in Latex but I have no clue how to do it,so it ...

Does anyone know how to do this,could anyone help me.