Comparing Magnetic Field Strengths with Vectors

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Homework Help Overview

The discussion revolves around comparing magnetic field strengths in a scenario involving current and pre-existing magnetic fields. Participants are exploring the implications of field orientation and density in relation to magnetic field strength.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants question whether the magnetic field strengths should be the same given their positions relative to the current. There are inquiries about the significance of certain variables and the overall scenario, including the role of pre-existing magnetic fields and how they interact with the current's magnetic field.

Discussion Status

Some participants have provided guidance on sketching the magnetic fields to visualize their interactions. There is an ongoing exploration of how to determine areas of reinforcement and opposition between the fields, but no consensus has been reached yet.

Contextual Notes

There are mentions of specific variables and elements in the scenario that require clarification, such as the significance of the distance (d) and the arrangement of truncated rectangles. The original question has not been fully stated, which may affect the clarity of the discussion.

Cici2017

Homework Statement



Screen Shot 2017-07-22 at 9.04.03 am.png

Homework Equations

The Attempt at a Solution


Shouldn't they be the same? Does one being above the current and the other being below make any difference? I know when there is a higher density of magnetic field lines, the magnetic field strength is greater, but in this case, isn't it the same?
I'm so confused , please help~
 
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I think you need to explain more about the scenario. What is the import of the (d) that is mentioned? What is the significance of the two truncated rectangles at wither side of the image? Is there a pre-existing magnetic field involved that you haven't mentioned? Please state the original question in its entirety.
 
gneill said:
I think you need to explain more about the scenario. What is the import of the (d) that is mentioned? What is the significance of the two truncated rectangles at wither side of the image? Is there a pre-existing magnetic field involved that you haven't mentioned? Please state the original question in its entirety.
Oh Yes, Sorry~
 
Screen Shot 2017-07-22 at 10.17.24 am.png
 
Okay, so there is an existing field due to the magnets represented by the rectangles. Sketch in the pre-existing field and then the field due to the current. Where do they reinforce and where do they oppose? You'll probably want to use the right and rule for the magnetic field due to a current :wink:
 
gneill said:
Okay, so there is an existing field due to the magnets represented by the rectangles. Sketch in the pre-existing field and then the field due to the current. Where do they reinforce and where do they oppose? You'll probably want to use the right and rule for the magnetic field due to a current :wink:
So the pre-existing magnetic field is from right to left (N to S) , and then the field due to the current is clockwise...how do I determine where they reinforce?
 
Cici2017 said:
So the pre-existing magnetic field is from right to left (N to S) , and then the field due to the current is clockwise...how do I determine where they reinforce?
Sketch the vectors!
 

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