Resistor Problem involving Lightbulbs

[ryankunzzz]

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.

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.

 

[mfb]

I agree with your answer. Why do you think it would be wrong?

 

[ryankunzzz]

I don't know. As long as someone agrees with this, I'll talk to my teacher.

 

[SammyS]

I don't know. As long as someone agrees with this, I'll talk to my teacher.

Yes, you are correct.

 

[abbas_majidi]

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)