Solving for Current Decay in a Resistor/Capacitor Circuit

Click For Summary

Homework Help Overview

The discussion revolves around a resistor-capacitor (RC) circuit problem, specifically focusing on the current decay in a circuit with a charged capacitor and a resistor. The original poster seeks clarification on the process to determine the time it takes for the current to reduce to half its initial value.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • Participants discuss relevant formulas related to RC circuits and express a desire to understand the underlying principles rather than just the final answer. There are inquiries about specific equations that govern the behavior of the circuit.

Discussion Status

The conversation is ongoing, with participants sharing various equations and references. Some guidance has been provided in the form of links to external resources, but there is no clear consensus on the approach to solving the problem yet.

Contextual Notes

Participants are working within the constraints of a homework assignment, which may limit the information they can share or seek. The original poster has expressed uncertainty about the solution process, indicating a need for deeper understanding rather than just the answer.

fasegovia
Messages
2
Reaction score
0

Homework Statement


A fully charged 10e-4 F capacitor has a potential difference across it of 9Volts. It is then connected to a resistor of 10 ohms. How long will it take for the current through the resistor to decrease to 1/2 of its initial value?


Homework Equations





The Attempt at a Solution


I know the answer is 6.9e-4 secs... but I want to know how it was done :/ Anyone?
 
Physics news on Phys.org
What formulas do you know (or can you look up) that involve a circuit with a resistor and a capacitor?
 
Well I have..
V = IR
I = |q|nAv
v = uE

R = L |q|nAu
 

Similar threads

Replies
5
Views
3K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 4 ·
Replies
4
Views
2K
Replies
20
Views
3K
  • · Replies 37 ·
2
Replies
37
Views
7K
Replies
2
Views
1K
Replies
9
Views
3K
Replies
2
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 38 ·
2
Replies
38
Views
7K