Resistor Problem involving Lightbulbs

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Homework Help Overview

The discussion revolves around a problem involving six identical lightbulbs connected to a battery, where participants are tasked with ranking the bulbs from brightest to dimmest based on their brightness.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants explore the reasoning behind the brightness ranking, with one suggesting that bulbs 6, 1, and 2 are equally bright due to the same current flowing through them. Others question the validity of this reasoning and express uncertainty about the correctness of the initial assessment.

Discussion Status

Some participants have expressed agreement with the initial ranking, while others are uncertain and seek further validation. There is a mix of interpretations regarding the relationship between current and brightness, indicating an ongoing exploration of the concepts involved.

Contextual Notes

Participants note a lack of equations or formal methods in their attempts to analyze the problem, which may affect their understanding of the relationships between current, resistance, and brightness.

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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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