Rank Bulb Brightness A-F: Physics Solution

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The discussion focuses on ranking the brightness of six identical bulbs connected to an ideal battery, with bulb A identified as the brightest and bulbs C and E as the dimmest. Participants emphasize the importance of showing work to receive assistance in solving the problem. There is a request for clarification on any specific points of confusion regarding the ranking. Overall, the conversation highlights the need for a clear understanding of the underlying physics principles to accurately assess bulb brightness. Providing detailed reasoning is essential for effective problem-solving in this context.
skli
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The figure shows six identical bulbs connected to an ideal battery. All the bulbs are glowing
Please see attached file.
Rank in order, from brightest to dimmest, the brightness of bulbs A to F.
Thank you

copy from Physics for Scientists and Engineering with Modern Physics by Randall D. Knight.
 

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A is the brightest. C and E are the dimmest.
 
Hi skli,

How come you haven't shown any work? (You need to shown work to receive help)
Is there something specific that's confusing you?
 
Thread 'Correct statement about size of wire to produce larger extension'

Thread 'Correct statement about size of wire to produce larger extension'

The answer is (B) but I don't really understand why. Based on formula of Young Modulus: $$x=\frac{FL}{AE}$$ The second wire made of the same material so it means they have same Young Modulus. Larger extension means larger value of ##x## so to get larger value of ##x## we can increase ##F## and ##L## and decrease ##A## I am not sure whether there is change in ##F## for first and second wire so I will just assume ##F## does not change. It leaves (B) and (C) as possible options so why is (C)...
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