Riddle Me This: Three Light Bulbs and Three Switches
Test your skills of deduction with the March 2021 edition of Riddle Me This: Three Light Bulbs and Three Switches
You are standing in a room with three light switches. Each of these switches controls one of three incandescent light bulbs in the room next to you. All of the switches are initially down and in the off position, and you are told that all of the light bulbs in the other room are off.
If you are allowed only one chance to enter the room with the three light bulbs, how can you determine which switches go with which bulbs?
Click to Reveal Answer
But what if the bulbs are LED as opposed to incandescent?
This solution will not necessarily work with new LED and cool type light bulbs.
Or, use 2 multimeters with long leads (or remote probes), remove the switch cover panel, turn the light switches on. Enter the room and remove the light bulbs, then test the potential in two light fixtures to determine which of the two switches goes with which fixture. The third one will then be evident!