Charge redistribution between two capacitors in series

[Virmus00]

TL;DR

Redistribution of charge principal : How does the negative charge Q redistribute after reconnecting it to a positive voltage Vdd=5V?

Hi folks,
I was trying to understand how the author get the equation (10) that you see in the highlighted page where it is written Vref*CN represent the charge stored within CN which I do not agree for the moment.
so I did a small simulation whith two capacitors C1=2uF and C2=3uF to check if I am right ,I feel like I am right but not the author!!! link to the experiments: two caps charge and discharge
if it was me I would write in the first term of the equation (10) not Vref but [1-CN/Ctotal]*Vref because the charge created by the Cn in Fig 2 (c) is the difference voltage across the CN multiplied by CN!!!!
please help to understand the physics of what is going on at electron level?

 

[Steve4Physics]

Welcome to PF @Virmus00.

Your attached image, even when enlarged, is unreadable. Please remember to check the forum rules: https://www.physicsforums.com/threads/homework-help-guidelines-for-students-and-helpers.686781/

 

[Virmus00]

Welcome to PF @Virmus00.

Your attached image, even when enlarged, is unreadable. Please remember to check the forum rules: https://www.physicsforums.com/threads/homework-help-guidelines-for-students-and-helpers.686781/

Sorry my bad. i want to edit/delete it, but I could not find any way to do it like in other forums? is there a guide for how to use it?

 

[Borek]

Sorry my bad. i want to edit/delete it, but I could not find any way to do it like in other forums? is there a guide for how to use it?

You can edit original post only for a limited time. Please add a better image in a reply and moderators will do some cleaning.

 

[Virmus00]

Here it the picture, hopefully it is more clear.

Seems the forums always reduce the quality of the image to reduce the size!!!