\input{labpreamble}
\usepackage[dvips]{graphics}

\begin{document}
\subsubsection*{PHSX 101L\hfill Experiment 14\hfill Name:\underline{\hspace*{2in}}}

\underline{Title:} Electric Circuits: Building Models

\underline{Object:} To develop a mental model of how electricity 
flows by doing inquiry-based experiments.

\underline{Introduction:} Electricity is usually invisible.  The 
Capacitor-Aided System for Teaching and Learning Electricity (CASTLE) 
is a system to help students visualize the concepts.  It utilizes 
batteries, wires, bulbs, compasses, and (of course) capacitors, some 
of which are pictured below.
\vspace{-.2in}
\begin{center}
	\includegraphics{CASTLE.eps}
\end{center}
\vspace{-.2in}

\underline{Equipment:}  Each group of two students will need:
\vspace{-.2in}
\begin{itemize}
\setlength{\itemsep}{0in}
	\item 1 CASTLE Curriculum Guide in 3-ring binder (do not write in them)
	\item 1 battery holder (black)
	\item 3 D-cell batteries (yellow)
	\item 1 compass (green box)
	\item 1 bundle of ten wires
	\item 4 light bulb holders (red)
	\item 2 long light bulbs
	\item 2 round light bulbs
	\item 1 25000 $\mu$F capacitor (blue)
	\item 1 100000 $\mu$F capacitor (silver)
	\item 1 1 F capacitor (green)
	\item 1 Genecon (light blue)
	\item 1 stopwatch
\end{itemize}

\underline{Procedure and Results:} Copies of the CASTLE Curriculum -- 
Student Guide are provided for your use during this lab period.  
Please do not write on them; instead record your answers on your own 
paper (to be attached to this one).  Strive to make your write-up 
communicate in the neatest and clearest way possible.  Diagrams are 
good.  Include conclusions.

In groups of \emph{two}, do the following sections from 
the student guide (and read as many of the other sections as  
you have time for):
1.1, 1.2, 1.7, 1.8, 2.1, 2.2, 2.4, 2.5, 2.7, 3.1, 3.2, 3.3, 3.6, 3.8, 
3.9, 3.14, 4.1.

\underline{Hints and Tips:}
\vspace{-.2in}
\begin{enumerate}
	\item Read chapter 20 from your textbook before lab.
	\item Disconnect circuits when not actually making observations so 
	that the bulbs and batteries will last longer.
	\item Unless instructed otherwise, you should not 
	connect a single bulb across a 3-battery system (4.5 V) since the 
	bulbs are rated for 2.0 V.
	\item Don't crank the Genecon too quickly or you will burn out the 
	bulbs (it can generate 6.0 V and the bulbs are rated for 2.0 V).
\end{enumerate}


\end{document}
