Test: 3 Switches

You are in a room with 3 light switches. These switches are connected to 3 separate light bulbs in an ajoining room. Access to the ajoining room is via a door that remains closed, there are no windows, other people etc etc.

You are allowed to enter the ajoining room once and then return. At no time can you view the light bulbs whilst being able to manipulate the light switches.

Under these conditions, how do you identify which switch is connected to which light bulb?

Please don't cheat and google it!

Answer will be given at 7:30

2 Comments

Switch one on for 5 minutes, then off, then immediately switch the second on and go feel the bulb if its off and cold it is switch three, if its on and just warm its switch two and if its off but burning hot its the first switch.

Original Poster

harlzter;2484385

Switch one on for 5 minutes, then off, then immediately switch the … Switch one on for 5 minutes, then off, then immediately switch the second on and go feel the bulb if its off and cold it is switch three, if its on and just warm its switch two and if its off but burning hot its the first switch.



Yep.
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