Question

There are 380 light bulbs lined up in a row in a long room.

Each bulb has its own switch and is currently switched off.
Each bulb is numbered consecutively from 1 to 380. You
first flip every switch. You then flip the switch on every
second bulb(turning off 2, 4,6...). You then flip the switch
on every third bulb (3, 6, 9...). This continues until you
have gone through the process 380 times.

Answer 1

The operating voltage of light bulbs wired in series depends on whether they break the electrical connection or short circuit when one bulb burns out.

Step-by-step explanation:

The subject of this question is Physics. The question involves the operation of light bulbs wired in series and the effect of one bulb burning out on the others.

In the case of old light bulbs that break the electrical connection when they burn out, if one bulb burns out, the electrical circuit is broken and all the other bulbs will turn off. In a string of 40 identical bulbs operating on 120V, the normal operating voltage of each bulb would be 120V divided by 40, which is 3V.

In the case of newer light bulbs that short circuit when they burn out, if one bulb burns out, the remaining bulbs will still receive the operating voltage. In a string of 39 remaining identical bulbs operating on 120V, the operating voltage of each bulb would still be 120V divided by 39, which is approximately 3.08V.