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

  • B
  • Thread starter Thread starter Kashmir
  • Start date Start date
  • Tags Tags
    Capacitance
AI Thread Summary
The discussion revolves around calculating the capacitance between two points on three concentric shells with radii a, b, and c. Participants suggest treating the shells as two capacitors in series for simplification. There is a request for a more fundamental approach using the definition of capacitance, C = Q/V. However, the thread was closed due to a reminder that such schoolwork problems should be posted in the appropriate forums with demonstrated effort. The user is advised to re-post their question in the Schoolwork forums for further assistance.
Kashmir
Messages
466
Reaction score
74
Misplaced Homework Thread with No Effort Shown
IMG-20230727-WA0003.jpg


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
 
Physics news on Phys.org
Among many ways, you could treat it as two capacitors (a,b ---b,c) in series. What is the capacitance of two concentric shells?
 
  • Like
Likes Kashmir
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.
 
  • Like
Likes PhDeezNutz
Thread 'Inducing EMF Through a Coil: Understanding Flux'

Thread 'Inducing EMF Through a Coil: Understanding Flux'

Thank you for reading my post. I can understand why a change in magnetic flux through a conducting surface would induce an emf, but how does this work when inducing an emf through a coil? How does the flux through the empty space between the wires have an effect on the electrons in the wire itself? In the image below is a coil with a magnetic field going through the space between the wires but not necessarily through the wires themselves. Thank you.
View full post »

Thread 'Reflections at the source point of a transmission line'

I was using the Smith chart to determine the input impedance of a transmission line that has a reflection from the load. One can do this if one knows the characteristic impedance Zo, the degree of mismatch of the load ZL and the length of the transmission line in wavelengths. However, my question is: Consider the input impedance of a wave which appears back at the source after reflection from the load and has traveled for some fraction of a wavelength. The impedance of this wave as it...
View full post »

Similar threads

Capacitance of three concentric shells
Replies
3
Views
1K
B Coulomb pressure and concentric spheres
Replies
1
Views
980
Computing capacitance in the general case
Replies
10
Views
2K
Capacitance between point charge and finite plate
Replies
4
Views
4K
Capacitance of two spheres with equal radius
Replies
1
Views
6K
Inserting a conductor in a parallel-plate capacitor
Replies
2
Views
2K
Proofing Capacitance: Understanding Electrostatics
Replies
2
Views
4K
Derivation of capacitance for two shells
Replies
4
Views
1K
Capacitance and inductance of cylindrical shell
Replies
1
Views
3K
Capacitance (intended and parasitic)
Replies
17
Views
2K

Hot Threads

Recent Insights

Back
Top