Faraday's Law and magnetic flux

Click For Summary

Homework Help Overview

The discussion revolves around Faraday's Law and the concept of magnetic flux in relation to a circular coil and a magnetic field. Participants are examining whether an induced current will occur when the magnetic field strength changes, given specific geometric conditions of the coil and the magnetic field region.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are exploring the relationship between the magnetic field and the coil, questioning the conditions under which an induced current would occur. There are attempts to clarify assumptions about the orientation and configuration of the magnetic field relative to the coil.

Discussion Status

The discussion is ongoing, with participants providing insights and questioning the assumptions made regarding the setup. Some have suggested that the direction of the magnetic field could influence the outcome, while others are seeking clarification on the implications of the problem statement.

Contextual Notes

There is a noted ambiguity regarding the orientation of the magnetic field and its relationship to the coil, which is impacting the conclusions drawn by participants. Additionally, the relevance of the homework context and the conditions for current generation are being debated.

rickyw2777
Messages
11
Reaction score
2
Homework Statement
If there is a circular coil of radius r0 and a circular region of magnetic field of radius r1. Given that them have the same center and r0>r1, if the magnetic field changed its magnetic field strength, will there still be a induced current?
Relevant Equations
E=delta Phi/delta t
I believe that there will not be a induced current because the magnetic field does not pass through the coil.
 
Physics news on Phys.org
Can you make a nice drawing that shows how you came to the conclusion?
 
rickyw2777 said:
Homework Statement: If there is a circular coil of radius r0 and a circular region of magnetic field of radius r1. Given that them have the same center and r0>r1, if the magnetic field changed its magnetic field strength, will there still be a induced current?
Relevant Equations: E=delta Phi/delta t

I believe that there will not be a induced current because the magnetic field does not pass through the coil.
Assuming that the field direction is along the axis of the coil (not defined in the question as stated here*), there will be a potential generated in the coil. This is exactly what happens in isolation transformers. The current depends on how the coil is connected.
*My assumption is that the coil and the field circle are coplanar, and the field is perpendicular to the disc of the circle.
However, you could read this as the field being along the circumference of the circle, in which case your original thoughts would apply.
 
rickyw2777 said:
Homework Statement: If there is a circular coil of radius r0 and a circular region of magnetic field of radius r1. Given that them have the same center and r0>r1, if the magnetic field changed its magnetic field strength, will there still be a induced current?
Relevant Equations: E=delta Phi/delta t

I believe that there will not be a induced current because the magnetic field does not pass through the coil.
I wonder where does the homework and you are looking at ? No charge, no current.
 
Last edited:

Similar threads

Replies
1
Views
1K
Replies
2
Views
2K
Replies
10
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
1
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 6 ·
Replies
6
Views
1K
  • · Replies 1 ·
Replies
1
Views
2K