What is the capacitance between two points on three concentric shells?

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Discussion Overview

The discussion revolves around calculating the capacitance between two points on three concentric shells with radii a, b, and c. Participants explore various methods to approach the problem, including using the definition of capacitance and considering the shells as capacitors in series.

Discussion Character

  • Homework-related, Exploratory, Technical explanation

Main Points Raised

  • One participant suggests treating the problem as two capacitors in series, specifically between the shells of radii a and b, and b and c.
  • Another participant expresses a desire for a more fundamental approach to the problem, indicating interest in using the definition of capacitance, C=Q/V.
  • A repeated post emphasizes the need for assistance with the same problem, indicating a lack of clarity or progress in understanding the solution.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the best method to calculate the capacitance, and multiple approaches are proposed without resolution.

Contextual Notes

The discussion includes a reminder that schoolwork-type problems should be posted in the appropriate forums, and participants are encouraged to show their efforts in solving the problem.

Kashmir
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A friend of mine sent me this problem about finding the capacitance.
We have three concentric shells of radius a, b, c. And we've to find the capacitance between x and y.

I need help.

Thank you
 
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Among many ways, you could treat it as two capacitors (a,b ---b,c) in series. What is the capacitance of two concentric shells?
 
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hutchphd said:
Among many ways, you could treat it as two capacitors (a,b ---b,c) in series. What is the capacitance of two concentric shells?
I would love to get a hint to do it any other way. Something that is more basic, like by using just the starting definition of C=Q/ V.
Thank you for your reply :)
 
Kashmir said:
View attachment 329683

A friend of mine sent me this problem about finding the capacitance.
We have three concentric shells of radius a, b, c. And we've to find the capacitance between x and y.

I need help.

Thank you
You've been at PF long enough to know that any schoolwork-type problem like this needs to be posted in the Schoolwork forums, and you need to show your best efforts to work on the problem. This thread is now closed. Please re-post in the Schoolwork forums. Thank you.
 
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