A little different RC circuit problem Help

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Homework Help Overview

The discussion revolves around an RC circuit problem presented as extra credit in a calculus-based physics class. The original poster seeks assistance in determining the time constant and current behavior in the circuit, particularly focusing on the effective resistance and how to analyze the circuit components given limited prior exposure to RC circuits.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the identification of effective resistance in the circuit and the implications for calculating the time constant. Questions arise regarding the treatment of resistors in series and parallel configurations, as well as the process of suppressing sources to analyze the circuit.

Discussion Status

The conversation is ongoing, with participants exploring different interpretations of the circuit configuration. Some guidance has been provided regarding the method to find equivalent resistance, but there is still uncertainty about the relationships between components and how to proceed with the calculations.

Contextual Notes

Participants note a lack of familiarity with certain circuit laws and concepts, such as Thevenin and Norton equivalents, which may impact their understanding of the problem. There is also mention of imposed homework constraints that limit the use of differential equations in the analysis.

  • #31
...so what are the initial and final values for the current through the capacitor?
 
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  • #32
ah OK, interesting. So with that said now, we've got 2 time constants, and also 2 circuits? One for discharging and one for charging. Or in fact we have 4 circuits, 2 when charging (capacitor empty/full) and 2 when discharging (capacitor full/empty).
 
  • #33
gneill said:
...so what are the initial and final values for the current through the capacitor?

I'm not 100% sure how to answer this.
 
  • #34
Unfortunately I have to sign off for the evening, I will look forward to continuing this tomorrow hopefully. I am almost there :) Perhaps with a fresh mind and a bit of scrap paper I can finish this off and report the findings to you tomorrow.

Thanks again for all the help. I have been trying to find some assistance with this for weeks and within minutes of posting here I got a detailed answer and a great tutor! :)

Thanks again, truly appreciate all your help.

All the best.
 

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