diff --git a/Misc/Warm-Ups/electician.tex b/Misc/Warm-Ups/electician.tex index 66463e9..3b09995 100755 --- a/Misc/Warm-Ups/electician.tex +++ b/Misc/Warm-Ups/electician.tex @@ -109,7 +109,8 @@ \end{minipage} \end{center} - A switch is always in the \say{A} or \say{B} state. Its state changes when you toggle the switch on the wall. Each circle represents a terminal on the switch, and lines represent electrical connections. + A switch is always in the \say{A} or \say{B} state. Its state changes when you toggle the switch on the wall. Each circle represents a terminal on the switch, and lines represent electrical connections. \par + The two crossing wires in the A state of the four-way switch are \textbf{not} connected. \example{} First, Ivan wires a simple light in the kitchen: one switch, one lamp. The result is the following circuit: @@ -147,7 +148,10 @@ \end{center} \problem{} - Ivan now needs to wire a hallway. It has two switches, one at each end. Toggling either switch should toggle the single lamp in the middle. Which switches should Ivan use, and how should he connect their terminals? + Ivan now needs to wire a hallway. It has two switches, one at each end. \par + Toggling either switch should toggle the single lamp in the middle. \par + Which switches should Ivan use, and how should he connect their terminals? \par + \hint{There are two solutions. One is clever, the other is deadly.} \vfill