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Q&A Role of C2 (bypass capacitor)

I have been reading about thermal noise in resistors and I have a question: Suppose we have this circuit: Is C2 here to protect the voltage source from thermal noise?

2 answers  ·  posted 1y ago by Volpina‭  ·  last activity 1y ago by Andy aka‭

Question capacitor noise resistor
#1: Initial revision by user avatar Volpina‭ · 2023-05-08T04:55:44Z (over 1 year ago) 
Role of C2 (bypass capacitor)
I have been reading about thermal noise in resistors and I have a question:

Suppose we have this circuit:

![](https://electrical.codidact.com/uploads/cmez78ei56koht6q4opb2jy37ub3)

Is C2 here to protect the voltage source from thermal noise?[]()[]()
capacitor noise resistor