Am I On the Right Track? Assessing My Work and Doubts

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Homework Help Overview

The discussion revolves around two sets of questions related to electromagnetic concepts, specifically focusing on Faraday's law and induced electric fields. Participants are assessing the correctness of their work and clarifying their understanding of the underlying principles.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are examining the validity of their calculations and interpretations of Faraday's law. Questions arise regarding the definitions used, such as the term "average flux," and the inclusion of factors like the number of turns in a coil.

Discussion Status

There is an ongoing examination of the participants' reasoning and calculations. Some guidance has been provided regarding the correct application of Faraday's law and the need to consider additional factors in the calculations. Multiple interpretations of the problems are being explored.

Contextual Notes

Participants express uncertainty about their work and the definitions they are using, indicating a need for clarification on specific terms and concepts related to electromagnetic induction.

matt222
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I Have two set of Qs i worked throu. & i am not sure of my works
am i on the right tuck
 

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matt222 said:
I Have two set of Qs i worked throu. & i am not sure of my works
am i on the right tuck
In #1, your comment (average flux) is not correct. It is not an average, it is a difference.

In #2, what is the basis of the equation you used for E?
 
So #1 is right, only the comment (average flux) is wronge??

in #2 i used farady's law( E 2pi r= -the rate of change of flux), for induced electric field:

E (2pi r)= -(pi R^2 dB/dt)/2r

E=1/2r* dB/dt *R^2

this is E
 
matt222 said:
So #1 is right, only the comment (average flux) is wronge??

in #2 i used farady's law( E 2pi r= -the rate of change of flux), for induced electric field:

E (2pi r)= -(pi R^2 dB/dt)/2r

E=1/2r* dB/dt *R^2

this is E
In #1 you also failed to include the number of turns of wire in the coil. Other than that it is good.

You need to take another look at Faraday's law. The flux involved is the flux through the closed path of the E•ds integral.
 

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