Formula confusion for magnetic field inside capacitor

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Homework Help Overview

The discussion revolves around a formula related to the magnetic field inside a capacitor, specifically focusing on its derivation and applicable scenarios. Participants are trying to clarify the context and usage of this formula within the framework of electromagnetic theory.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to understand the origin of a specific formula and its applications. Some participants question the clarity of the uploaded material and suggest typing out the formula instead. Others provide insights into the theoretical background, referencing Maxwell's addition to Ampere's Law and its relevance to the problem.

Discussion Status

The discussion is ongoing, with participants exploring the theoretical underpinnings of the formula and its derivation. Some guidance has been offered regarding the complexity of the topic, indicating that a deeper understanding may require advanced study in electromagnetism.

Contextual Notes

There are issues with the readability of uploaded materials, which has led to suggestions for clearer communication. The original poster expresses a desire for resources to study the formula further.

Suyash Singh

Homework Statement


Uploaded question(the formula in c part)
And can you tell me in which all cases that formula is used.

Homework Equations


Just want to know where the formula in c part has come from.

The Attempt at a Solution


Sum of magnetic fields due to circular plates calculated and added but that seems to be wrong method here.
I just need some kind of site to study that formula.
Thankyou
 

Attachments

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    Screenshot_20170827-212414.png
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UPLOAD didn't seem to work. What file type is it?
 
berkeman said:
UPLOAD didn't seem to work. What file type is it?
.png
 
I think that file type is supported, but I'm not sure. Are you on a laptop or a phone?
 
Suyash Singh said:

Homework Statement


Uploaded question(the formula in c part)
And can you tell me in which all cases that formula is used.

Homework Equations


Just want to know where the formula in c part has come from.

The Attempt at a Solution


Sum of magnetic fields due to circular plates calculated and added but that seems to be wrong method here.
I just need some kind of site to study that formula.
Thankyou

I can see the image but it is virtually unreadable.

Please go back to the basic PF standard and just type out the expression you are interested in. Most helpers will not even bother to look at an uploaded image, and when it is unreadable they will just go away, unwilling to help.
 
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Suyash Singh said:
Just want to know where the formula in c part has come from.
It comes from Maxwell's addition to Ampere's Law. You can use that to solve for the magnetic field in between a capacitor, but they just did the work for you. Here's a link to the hyperphysic's page on Ampere's Law http://hyperphysics.phy-astr.gsu.edu/hbase/electric/maxeq2.html#c4

The magnetic field is the result of the changing electric field as the capacitor plates charge. Also, actually solving for formulas like that is typically an upper-ish level undergraduate E&M course task (requiring integral calculus, curl, etc.) so don't worry about it too much if you're not there yet.
 
  • Like
Likes   Reactions: Suyash Singh
thankyou.
I will type out the question next time.
 

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