Do I have DC here ? Or does this cap prevents it ?

[Frederico Acardi]

Hello, the question is in the image


Thank you.

[rsjsouza]

No DC there if V2 is an ideal sinewave generator with no DC offset.

In the real world you might have some DC depending on the generator and if it has decoupling on its output.

[Frederico Acardi]

It's not an ideal generator, but suppose I have a DC offset, it will still be present after the pot at this node ?

[rsjsouza]

It's not an ideal generator, but suppose I have a DC offset, it will still be present after the pot at this node ?

Yes, but proportional to the position of the cursor of R2 - in other words, R2 is a voltage divider where the output voltage is proportional to the relationship between the lower pin and the cursor and the upper pin and the cursor. 

Question 9 of the reference below contains a nice description of this scenario
https://www.allaboutcircuits.com/worksheets/potentiometers/

[Frederico Acardi]

Thank you !