Monday, October 24, 2011

Which switch for which bulb?

There is a room with a door closed and three light bulbs. Outside the room there are three switches corresponsing to each bulb. You can turn the switches ON and OFF as you wish, but once you open the door you CANNOT change them. How will you identify which switch corresponds to which bulb?Which switch for which bulb?assume switches labeled 1, 2, and 3. turn switch 1 on for an extended period of time. turn switch 1 off. turn switch 2 on. go into the room. if the bulb is off and hot, it is switch 1. if it is on, it is switch 2. if it is off and cold, it is switch 3.Which switch for which bulb?sometimes you can tell which switch goes to which bulb. Unless you live in a weird house like i do. the switches are backwards. Off course, my house is made out of a chicken house.

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Which switch for which bulb?dont openthe door at all, just break right through it or the wall.Which switch for which bulb?u can conform it by looking through window paneWhich switch for which bulb?label 1, 2, and 3 on the switch.

turn switch 1 on for an extended period of time then turn it off.

turn switch 2 on.

go into the room.

then you can have something like this....

the bulb is off and hot, is switch 1.

it is on, is switch 2.

off and cold, is switch 3.Which switch for which bulb?I like the first answer you got. I was going to suggest a multimeter but the other answer is better.
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