How can you find out which switch corresponds to which light?

There are 3 lights (in one room) and 3 switches (in another room), one for each, if you only enter into the light room once. How can you find out which switch corresponds to which light?
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A.ARUNAGIRI

  • Jul 24th, 2006
 

1.On the switch '1' for few seconds and off the switch '1'.

2. On the switch ‘2 and enter the lights room. Bulb which is illuminating due to switch '2'. Is bulb 'b'

3. Bulb which is not illuminating but feel hot by touching due to switch '1'. is bulb 'a'.

4. Bulb which is not illuminated and not hot is bulb 'c ' and switch '3' is not operated till now.

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Thanuja

  • Jul 24th, 2006
 

There are 3 lights (in one room) and 3 switches

First you turn on one of the switches and don't enter the room for sometime, till the light inside is heated up. Then U switch that light off, and then turn the second one on and enter the room.

The one heated up is the first switch u turned on, the one glowing is the second switch u turned on and the one that is off is the remaining switch!!!

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Sudarsh

  • Aug 3rd, 2006
 

Put switch 1 on
Go to the light room
note the light that is on
put a coin in any one of the other two light holders
come back to the switch room
turn on the switch 2
if the fuse blows out then you know the second and third light holders

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MIRUTHULA.D

  • Aug 9th, 2006
 

switch on a switch for a long time... then switch it off....... now switch on the second switch... get into the room....... touch the other two lights.........the one which is hot willbe connected to the first switch which on for a long time......... one of the light will glow,this will correspond to the switch which is presently on.......third is known

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mamraj singh

  • Aug 31st, 2006
 

1; on the switch no. 1 and stay 5minute there.2; after 5minute off the switch no 1 and on the switch no23; go into second room;----(a) if bulb is on then switch 2of this(b)if bulb is hot then switch 1(c) if bulb nither hot nor on then switch 3.

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Richa Gautam

  • Sep 26th, 2006
 

Hi , everyBody... Simple........... on the switch and check that which light is on, BECAUSE It is given that first room has lights and second room has switches but it is not mentioned that second room has the Corresponding switches of first room's lights. Thanks & Bye...............

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Afsari shams

  • Mar 27th, 2007
 

Assuming the switches & bulbs to be in the same order,on any one of the end switches(say switch 'A') & enter the room,the bulb which is glowing corresponds to switch 'A' ,its neighbouring bulb would correspond to switch 'B' followed by 'C'. 

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mdineshcse

  • Apr 11th, 2007
 

Put anyone of the three switches for one or two minute.Then switch off it.Afterwards put the another switch then go the next room and notice bulb for that switch.Then touch the three bulbs and note the switch for that bulb which you had put earlier.

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TABISH

  • Jun 15th, 2007
 

As per the Question there are no switch in the light room. So how anybody press the switch.

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santhosh

  • Jun 4th, 2012
 

let the three bulbs be a,b,c and their corresponding switches be A,B,C
First on the switch A, next on the switch B.Now off switch A

When U come to the light room, bulb b will be glowing and bulb a will be hot. And the remaining bulb is c for switch C.

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