# QB/a21CircuitsBioInstDC RCdecaySimple

< QB

The enrollment key for each course is 123. They are all is set to practice mode, giving students unlimited attempts at each question. Instructors can also print out copies of the quiz for classroom use. If you have any problems leave a message at user talk:Guy vandegrift.

• Quizbank now resides on MyOpenMath at https://www.myopenmath.com (although I hope Wikiversity can play an important role in helping students and teachers use these questions!)
• At the moment, most of the physics questions have already been transferred. To see them, join myopenmath.com as a student, and "enroll" in one or both of the following courses:
• Quizbank physics 1 (id 60675)
• Quizbank physics 2 (id 61712)
• Quizbank astronomy (id 63705)

See special:permalink/1863343 for a wikitext version of this quiz.

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%%%%% PREAMBLE%%%%%%%%%%%%
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% BEGIN DOCUMENT
\begin{document}
\title{a21CircuitsBioInstDC\_RCdecaySimple}
\author{The LaTex code that creates this quiz is released to the Public Domain\\
Attribution for each question is documented in the Appendix}
\maketitle
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\\Latex markup at\\
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\begin{frame}{}
\begin{multicols}{3}
\tableofcontents
\end{multicols}
\end{frame}
\pagebreak\section{Quiz}
\keytrue
\begin{questions}
\question A 621 mF capacitor is connected in series to a 628 k\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{3}? (where e =2.7...)\ifkey\endnote{a21CircuitsBioInstDC\_RCdecaySimple\_1 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863343}}}\fi
\begin{choices}
\choice 1.17 x 10\textsuperscript{5} s.
\choice 3.7 x 10\textsuperscript{5} s.
\CorrectChoice 1.17 x 10\textsuperscript{6} s.
\choice 3.7 x 10\textsuperscript{6} s.
\choice 1.17 x 10\textsuperscript{7} s.
\end{choices}

\question A 784 \textmu\ F capacitor is connected in series to a 543 k\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{3}? (where e =2.7...)\ifkey\endnote{a21CircuitsBioInstDC\_RCdecaySimple\_2 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863343}}}\fi
\begin{choices}
\choice 4.04 x 10\textsuperscript{1} s.
\choice 1.28 x 10\textsuperscript{2} s.
\choice 4.04 x 10\textsuperscript{2} s.
\CorrectChoice 1.28 x 10\textsuperscript{3} s.
\choice 4.04 x 10\textsuperscript{3} s.
\end{choices}

\question A 354 mF capacitor is connected in series to a 407 M\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{3}? (where e =2.7...)\ifkey\endnote{a21CircuitsBioInstDC\_RCdecaySimple\_3 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863343}}}\fi
\begin{choices}
\choice 4.32 x 10\textsuperscript{7} s.
\choice 1.37 x 10\textsuperscript{8} s.
\CorrectChoice 4.32 x 10\textsuperscript{8} s.
\choice 1.37 x 10\textsuperscript{9} s.
\choice 4.32 x 10\textsuperscript{9} s.
\end{choices}

\question A 10 F capacitor is connected in series to a 9\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{4}? (where e =2.7...)\ifkey\endnote{a21CircuitsBioInstDC\_RCdecaySimple\_4 placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863343}}}\fi
\begin{choices}
\CorrectChoice 3.6 x 10\textsuperscript{2} s.
\choice 1.14 x 10\textsuperscript{3} s.
\choice 3.6 x 10\textsuperscript{3} s.
\choice 1.14 x 10\textsuperscript{4} s.
\choice 3.6 x 10\textsuperscript{4} s.
\end{choices}

\end{questions}
\newpage\section{Renditions}
\subsection{}%%%% subsection 1
\begin{questions} %%%%%%% begin questions
\question A 547 mF capacitor is connected in series to a 2 k\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{4}? (where e =2.7...)

\begin{choices} %%%%%%% begin choices
\choice  1.38 x 10\textsuperscript{3} s.
\CorrectChoice 4.38 x 10\textsuperscript{3} s.
\choice  1.38 x 10\textsuperscript{4} s.
\choice  4.38 x 10\textsuperscript{4} s.
\choice  1.38 x 10\textsuperscript{5} s.
\end{choices} %%% end choices
\question A 819 mF capacitor is connected in series to a 798 k\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{4}? (where e =2.7...)

\begin{choices} %%%%%%% begin choices
\choice  8.27 x 10\textsuperscript{5} s.
\CorrectChoice 2.61 x 10\textsuperscript{6} s.
\choice  8.27 x 10\textsuperscript{6} s.
\choice  2.61 x 10\textsuperscript{7} s.
\choice  8.27 x 10\textsuperscript{7} s.
\pagebreak
\end{choices}

\end{questions}%%%%%%%% end questions
\subsection{}%%%% subsection 2
\begin{questions} %%%%%%% begin questions
\question A 665 \textmu\ F capacitor is connected in series to a 806 k\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{2}? (where e =2.7...)

\begin{choices} %%%%%%% begin choices
\choice  3.39 x 10\textsuperscript{1} s.
\choice  1.07 x 10\textsuperscript{2} s.
\choice  3.39 x 10\textsuperscript{2} s.
\CorrectChoice 1.07 x 10\textsuperscript{3} s.
\choice  3.39 x 10\textsuperscript{3} s.
\end{choices} %%% end choices
\question A 65 \textmu\ F capacitor is connected in series to a 414 k\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{4}? (where e =2.7...)

\begin{choices} %%%%%%% begin choices
\choice  1.08 x 10\textsuperscript{1} s.
\choice  3.4 x 10\textsuperscript{1} s.
\CorrectChoice 1.08 x 10\textsuperscript{2} s.
\choice  3.4 x 10\textsuperscript{2} s.
\choice  1.08 x 10\textsuperscript{3} s.
\pagebreak
\end{choices}

\end{questions}%%%%%%%% end questions
\subsection{}%%%% subsection 3
\begin{questions} %%%%%%% begin questions
\question A 206 mF capacitor is connected in series to a 990 M\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{4}? (where e =2.7...)

\begin{choices} %%%%%%% begin choices
\CorrectChoice 8.16 x 10\textsuperscript{8} s.
\choice  2.58 x 10\textsuperscript{9} s.
\choice  8.16 x 10\textsuperscript{9} s.
\choice  2.58 x 10\textsuperscript{10} s.
\choice  8.16 x 10\textsuperscript{10} s.
\end{choices} %%% end choices
\question A 727 mF capacitor is connected in series to a 860 M\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{3}? (where e =2.7...)

\begin{choices} %%%%%%% begin choices
\CorrectChoice 1.88 x 10\textsuperscript{9} s.
\choice  5.93 x 10\textsuperscript{9} s.
\choice  1.88 x 10\textsuperscript{10} s.
\choice  5.93 x 10\textsuperscript{10} s.
\choice  1.88 x 10\textsuperscript{11} s.
\pagebreak
\end{choices}

\end{questions}%%%%%%%% end questions
\subsection{}%%%% subsection 4
\begin{questions} %%%%%%% begin questions
\question A 5 F capacitor is connected in series to a 8\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{4}? (where e =2.7...)

\begin{choices} %%%%%%% begin choices
\choice  1.6 x 10\textsuperscript{1} s.
\choice  5.06 x 10\textsuperscript{1} s.
\CorrectChoice 1.6 x 10\textsuperscript{2} s.
\choice  5.06 x 10\textsuperscript{2} s.
\choice  1.6 x 10\textsuperscript{3} s.
\end{choices} %%% end choices
\question A 10 F capacitor is connected in series to a 10\textOmega\  resistor.  If the capacitor is discharged, how long does it take to fall by a factor of e\textsuperscript{4}? (where e =2.7...)

\begin{choices} %%%%%%% begin choices
\choice  4 x 10\textsuperscript{0} s.
\choice  1.26 x 10\textsuperscript{1} s.
\choice  4 x 10\textsuperscript{1} s.
\choice  1.26 x 10\textsuperscript{2} s.
\CorrectChoice 4 x 10\textsuperscript{2} s.
\end{choices} %%% end choices
\end{questions}\pagebreak