Understanding Charge Distribution in a Circuit with Multiple Capacitors

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Homework Help Overview

The discussion revolves around understanding charge distribution in a circuit containing multiple capacitors, specifically focusing on calculating the charge on individual capacitors given a potential difference and capacitance values.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to find the charge on specific capacitors after calculating the equivalent capacitance and total charge but expresses confusion about the relationship between these values and the circuit configuration. Other participants discuss the definitions and relationships of capacitance in series and parallel configurations, while some question the accuracy of statements made about these relationships.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the circuit setup and the principles of capacitance. Some guidance has been offered regarding the calculation of equivalent capacitance and charge, but there is no explicit consensus on the correct approach or understanding of the problem.

Contextual Notes

There are constraints related to the attachment that accompanies the original post, which some participants cannot access. Additionally, there is a mention of a similar problem in a physics book, indicating varying levels of familiarity with the topic among participants.

RadiationX
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In the figure given the battery has a potential difference of V=10V and the five capacitors each have a capacitance of 10 micro Farads. What is the charge on (a) capacitor 1 and (b) capacitor 2 ?I totally know how to redraw the circuit but I don't have a clue as to how the capacitance equivalent relates to the rest of the ciruit. I need some help really bad. I have the soulution in my book but I don't understand it. How do I find these charges?

what I've done so far is find the capacitance equivalent which is
1.6 X 10^-5 Farad. Once I had that I found the total charge 1.6 X 10^-4 Couomb. I'm stuck as to how to continue now.
 
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I hope the people who have looked at my post have looked at the attachment that goes with it.
 
I tried to look at it but it says "Attachments Pending Approval" and I can't open it.
 
ughh I dont' know what to do about that.
 
I see it, but unforutnately I am not good with Circuits.

I do know that the definition of capacitance is Q/V=C_1 + C_2
 
Capacitors in series are like resistors in parallel. Conversely, capacitors in parallel are like resistors in series.

What you have written is not true in general Kahless2005.
 
I have found a similar problem in my physics book, the difference is there are only 4 capacitors.

what you should do is find the 1/C_eq which would be
1/((1/(C_1+C_3))+C_4)+1/C_5+1/C_2

Then find the Q_eq which is C_eq*V. That should be the charge across all the capacitors
 
When you do these kinds of problems, you need to understand how to simplify capacitors into equivalent ones. have you learned how to do that yet? parallel capacitors can be made into an equivalent capacitor by adding their capacitance, and series capacitors follow the same rule as resistors in parallel. just go through the problem capacitor by capacitor to get the total capacitance. once you know this, then C= Q/V.
 
That is wrong kahless2005.
 
  • #10
In addition, it would be better for RadiationX to learn how to do this on his/her own.
 

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