Magnetic Induction: Homework Help

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Homework Help Overview

The discussion revolves around the topic of magnetic induction, specifically focusing on the application of Lenz's law and the interaction between magnetic fields and current-carrying loops. Participants are exploring how magnetic fields behave in relation to a wire loop when influenced by a magnetic bar.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the use of right-hand rules to determine the direction of current and magnetic force. There are attempts to visualize magnetic field lines and their orientation in relation to a wire loop. Questions arise about the implications of moving a magnetic bar towards or away from the loop and how this affects the magnetic force.

Discussion Status

Some participants have made progress in understanding Lenz's law and its application to the problem, while others express uncertainty about relating magnetic force to the circular loop. There is an ongoing exploration of how to connect these concepts without a clear consensus on the next steps.

Contextual Notes

Participants mention challenges in understanding the relationship between magnetic force and the circular loop, indicating potential gaps in foundational knowledge or assumptions about the problem setup.

mick5000x
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Homework Statement


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Homework Equations


I am not really good at this topic, but I think you would need both the right hand rules (one that involves finding direction of current via magnetic field as well as the one for finding magnetic force)

The Attempt at a Solution


So I drew out magnetic lines going from the north pole to the south pole. I am completely lost from there though. How does a magnetic bar being pulled away or towards the wire loop play a role? I got that for A and B, the magnetic field lines are pointing downwards into the loop and for C and D the magnetic field are pointing upwards. Am I wrong in this logic?
 
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Have you studied Lenz's law yet?
 
I figured out how to do the first couple questions using Lenz Law after a lot of reading. However, I still don't know how to relate magnetic force to a circular loop. I get that for A and B, the magnetic field lines are pointing in the loop while for C and D, the field lines are pointing away. How can I find the force from here? I tried to do the right hand rule but it doesn't work
 
Force exerted on the magnet will oppose its motion. It is consistent with the Lenz's law.
 

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