Magnetic Induction: Homework Help

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SUMMARY

The discussion focuses on understanding magnetic induction, particularly through the application of Lenz's Law and the right-hand rules. The user expresses confusion about how a magnetic bar's movement affects a wire loop and seeks clarity on the relationship between magnetic force and the circular loop. Key concepts include the direction of magnetic field lines and their implications for force exerted on the magnet, which opposes its motion as per Lenz's Law. The user successfully applies Lenz's Law to initial problems but struggles with the broader implications for circular loops.

PREREQUISITES
  • Understanding of Lenz's Law
  • Familiarity with the right-hand rule for magnetic fields
  • Basic knowledge of magnetic field lines
  • Concept of magnetic force in relation to motion
NEXT STEPS
  • Study the application of Lenz's Law in various scenarios
  • Learn about the right-hand rule for magnetic force and current
  • Explore the relationship between magnetic fields and induced electromotive force (EMF)
  • Investigate the effects of magnetic field direction on circular loops
USEFUL FOR

Students studying electromagnetism, physics educators, and anyone seeking to deepen their understanding of magnetic induction and its applications in circuits.

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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