there are three switched on bulbs how to know which was switched on first
dbzfreaksoham:
wtf(wonder thank for your help)
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hey dude
ur answer is below
• Switch on switches 1 & 2, wait a moment and switch off number 2.
• Enter the room. Whichever bulb is on is wired to switch 1, whichever is off and hot is wired to switch number 2, and the third is wired to switch 3.
Obviously any combination would work. It doesn't have to be switches 1 & 2 you flick, any two will be fine, so long as you can remember which. There is another possible answer, this involves switching on 1, then waiting a while and switching on 2. When you get in to the room two of the bulbs will be on but one will be much hotter. It's valid, but there are several reasons why this is not as good. I have built below a sort of simulator. Have a play, it's obviously more of a test if you hide the Bulbs until you've finished messing with the switches!
I hope this help u........!!!!!!
mark my answer brainlist
ur answer is below
• Switch on switches 1 & 2, wait a moment and switch off number 2.
• Enter the room. Whichever bulb is on is wired to switch 1, whichever is off and hot is wired to switch number 2, and the third is wired to switch 3.
Obviously any combination would work. It doesn't have to be switches 1 & 2 you flick, any two will be fine, so long as you can remember which. There is another possible answer, this involves switching on 1, then waiting a while and switching on 2. When you get in to the room two of the bulbs will be on but one will be much hotter. It's valid, but there are several reasons why this is not as good. I have built below a sort of simulator. Have a play, it's obviously more of a test if you hide the Bulbs until you've finished messing with the switches!
I hope this help u........!!!!!!
mark my answer brainlist
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