Resistor Problem involving Lightbulbs

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The discussion centers on determining the brightness of six identical lightbulbs connected to a battery. The initial assumption was that bulbs 6, 1, and 2 are the brightest due to equal current flow, while bulb 3 is brighter than bulbs 4 and 5, which are equal. However, the correct understanding is that brightness correlates with power, expressed as P=R×I². The final ranking of brightness is bulbs 6, 1, and 2 being the brightest, followed by bulb 3, and then bulbs 4 and 5 being the dimmest. This clarification helps in accurately assessing the brightness of each bulb.
ryankunzzz
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Homework Statement


We have 6 lightbulbs that are identical attached to a battery, and we need to list them from brightest to dimmest.

This is what they look like.
2mgsN9o.png


Homework Equations



None...?

The Attempt at a Solution



So, my thinking is that bulbs 6,1,2 are the brightest and the same, because the same amount of current is flowing through them, then I think that 3 is brighter than 4 and 5 which are equal...

This is wrong and I don't know why.
 
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I agree with your answer. Why do you think it would be wrong?
 
I don't know. As long as someone agrees with this, I'll talk to my teacher.
 
ryankunzzz said:
I don't know. As long as someone agrees with this, I'll talk to my teacher.
Yes, you are correct.
 
Hello my friend
Your answer is correct. Brightness of bulbs is proportional power of them.
P=R×I×I
Therefore brightness of bulbs:
6,1,2(are same)>3>4,5(are same)
 
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