QB/c19ElectricPotentialField GaussLaw

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Wikinews-logo-prototype by Diego Grez.svg
8 min video
slides only

I just made a video that is available in three places:
1- https://www.youtube.com/watch?v=1mwIkHshOIg
2-My facebook page
3-c:File:Open Quizbank Proposal First.webm
See also the pdf printout of the slides
Lake Campus Symposium: Creating a bank so students won't break the bank
https://bitbucket.org/Guy_vandegrift/qbwiki/wiki/Home/
The conversion to LaTeX should make this bank more compatible with VLEs
CLICK HERE TO SEE HOW MANY PEOPLE ARE VISITING THESE QUESTIONS
 Quizbank - Quizbank/Python/LaTex - Category:QB/LaTeXpdf - QB - edit news
Students with minimal Python skills can now write numerical questions



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\title{c19ElectricPotentialField\_GaussLaw}
\author{The LaTex code that creates this quiz is released to the Public Domain\\
Attribution for each question is documented in the Appendix}
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\begin{center}                                                                                
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\footnotesize{ \url{https://en.wikiversity.org/wiki/special:permalink/1863398}}
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\begin{questions}\keytrue

\question A cylinder of radius, R, and height H has a uniform charge density of \(\rho\).  The height is much less than the radius: \(H << R\). The electric field at the center vanishes.  What formula describes the electric field at a distance, z, on axis from the center if \(z>H/2\)?\ifkey\endnote{ placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863398}}}\fi
\begin{choices}
\choice answer:  \(\varepsilon_0 E=    \rho z \)
\choice answer:  \(\varepsilon_0 E=   H\rho \)
\choice answer:  \(\varepsilon_0 E=   H\rho z\)
\CorrectChoice answer:  \(\varepsilon_0 E =  H\rho /2\)
\choice answer:  \(\varepsilon_0 E =  r\rho\)
\end{choices}

\question A cylinder of radius, R, and height H has a uniform charge density of \(\rho\).  The height is much less than the radius: \(H << R\). The electric field at the center vanishes.  What formula describes the electric field at a distance, z, on axis from the center if \(z<H/2\)?\ifkey\endnote{ placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863398}}}\fi
\begin{choices}
\choice answer:  \(\varepsilon_0 E =  H\rho /2\)
\choice answer:  \(\varepsilon_0 E=    \rho z/2 \)
\CorrectChoice answer:  \(\varepsilon_0 E=    \rho z \)
\choice answer:  \(\varepsilon_0 E=   H\rho \)
\choice answer:  \(\varepsilon_0 E=   H\rho z\)
\end{choices}

\question A sphere has a uniform charge density of \(\rho\), and a radius or R.  What formula describes the electric field at a distance \(r>R\)?\ifkey\endnote{ placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863398}}}\fi
\begin{choices}
\choice answer:  \( r^2\varepsilon_0 E=rR^2\rho /2\)
\choice answer:  \( r^2\varepsilon_0 E=R^3\rho /2\)
\choice answer:  \( r^2\varepsilon_0 E= r^3\rho/3\)
\choice answer:  \( r^2\varepsilon_0 E=r^3\rho /2\) 
\CorrectChoice answer:  \( r^2\varepsilon_0 E=R^3\rho /3\)
\end{choices}

\question A sphere has a uniform charge density of \(\rho\), and a radius equal to R.  What formula describes the electric field at a distance \(r<R\)?\ifkey\endnote{ placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863398}}}\fi
\begin{choices}
\choice answer:  \( r^2\varepsilon_0 E=r^3\rho /2\) 
\choice answer:  \( r^2\varepsilon_0 E=R^3\rho /3\)
\choice answer:  \( r^2\varepsilon_0 E=Rr^2\rho /3\)
\CorrectChoice answer:  \( r^2\varepsilon_0 E=r^3\rho /3\)
\choice answer:  \( r^2\varepsilon_0 E=R^3\rho /2\)
\end{choices}

\question A cylinder of radius, R, and height H has a uniform charge density of \(\rho\).  The height is much greater than the radius: \(H >> R\)?. The electric field at the center vanishes.  What formula describes the electric field at a distance, r, radially from the center if \(r<R\)? \ifkey\endnote{ placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863398}}}\fi
\begin{choices}
\choice answer:  \(2R\varepsilon_0 E=   r^2\rho \)
\choice answer:  \(2r\varepsilon_0 E =  R^2\rho \)
\CorrectChoice answer:  \(2\varepsilon_0 E =  r\rho \)
\choice answer:  \(2\varepsilon_0 E =  R\rho \)
\choice answer:  \(2r^2\varepsilon_0 E=  R^3  \rho \)
\end{choices}

\question A cylinder of radius, R, and height H has a uniform charge density of \(\rho\).  The height is much greater than the radius: \(H >> \). The electric field at the center vanishes.  What formula describes the electric field at a distance, r, radially from the center if \(r>R\)?\ifkey\endnote{ placed in Public Domain by Guy Vandegrift: {\url{https://en.wikiversity.org/wiki/special:permalink/1863398}}}\fi
\begin{choices}
\choice answer:  \(2R\varepsilon_0 E=   r^2\rho \)
\choice answer:  \(2\varepsilon_0 E =  r\rho \)
\CorrectChoice answer:  \(2r\varepsilon_0 E =  R^2\rho \)
\choice answer:  \(2r\varepsilon_0 E =  2R^2\rho \)
\choice answer:  \(2r^2\varepsilon_0 E=  R^3  \rho \)
\end{choices}

\end{questions}
\newpage
\section{Attribution}
\theendnotes
\end{document}

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