\textbf{178-} A coil has $200$ turns and a magnetic flux of $0.05\,\text{Wb}$ passes through it and both ends of the coil are connected together. If the magnetic flux decreases harmonically to zero and the electrical resistance of the coil is $10\,\Omega$, how many coulombs of electric charge appear in it?
\begin{itemize}
\item[(1)] $0.01$
\item[(2)] $0.1$
\item[(3)] $1$
\item[(4)] $10$
\end{itemize}