Four light bulbs (A, B, C, D) are connected together in a circuit of unknown arrangement. When each bulb is removed one at a time (and subsequently replaced), the following behavior is observed while it is removed:
A B C D
A rem * on on on
B rem on * on off
C rem off off * off
D rem on off on *
If a given electron passes through C, it must also pass through? what about B, which one will not pass through b?
Be more specific with the chart
To determine the behavior of each bulb, we can analyze the table provided. The "rem" column indicates which bulb is being removed. The asterisk (*) in each row indicates whether the corresponding bulb is turned on or off when it is removed.
Looking at the first row, when bulb A is removed, we can see that bulbs B, C, and D are turned on. This implies that bulb A is in series with bulbs B, C, and D, meaning that the electron passes through all of them.
Similarly, when bulb B is removed (second row), we see that bulbs A and C are turned on, and bulb D is turned off. This suggests that bulb B is in parallel with bulb D, allowing the electron to bypass bulb D when bulb B is removed.
When bulb C is removed (third row), we observe that bulbs A and B are turned off, whereas bulb D remains off. This indicates that bulb C is also in parallel with bulb D.
Lastly, when bulb D is removed (fourth row), bulbs A, B, and C exhibit different behaviors, suggesting that bulb D is in series with them.
Therefore, from the given information, we can conclude that if an electron passes through bulb C, it must also pass through bulb D. Similarly, if an electron passes through bulb B, it will not pass through bulb D.