What's the relationship between drop height and induced emf?

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Discussion Overview

The discussion revolves around the relationship between the drop height of a bar magnet and the induced electromotive force (emf) in a solenoid. Participants explore the theoretical frameworks that might apply to this relationship, including the Biot-Savart law and Faraday's law of induction. The context includes experimental setups and the challenges faced in deriving a relevant equation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant expresses confusion about how to relate the drop height of a bar magnet to the induced emf in a solenoid and questions the applicability of the Biot-Savart law, noting it typically involves current elements rather than magnets.
  • Another participant humorously suggests that the thread might belong in a different forum, implying a need for more context or background information.
  • A third participant mentions the importance of Faraday's law in understanding the induced emf, contrasting it with the Biot-Savart law.
  • There is a suggestion that the original poster should provide more details about their experiment, including a diagram and relevant equations, to facilitate better assistance.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the relationship between drop height and induced emf, and multiple viewpoints regarding the applicable laws and the need for further information remain present.

Contextual Notes

There is a lack of clarity regarding the specific experimental setup and the assumptions underlying the proposed relationships. The discussion also reflects uncertainty about the appropriate theoretical framework to apply.

FlyJanasic
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In my experiment, I intended to find out how the change in the bar magnet drop height from solenoid affected the emf induced in the solenoid, however, I am unable to come up with an equation that shows a relationship between the two variables.

I have thought of Biot-Savart law, but I do not think it is applicable since the law requires a current element, not a magnet.

Please do help me out as I am really scared and overstressing. I have seeked help and only made me more confused, so any help will be beneficial. Thanks!
 
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This should be in the classical physics forum, unless you're looking for a supersymmetric solution :P

A mod will probably move it there.

A bit more background would help, though.
 
Hello FlyJanasic, :welcome:

Getting all stressed while discovering the world is not a good idea: it hinders your imagination :smile: .

Magnitude of emf induced in a solenoid has to do with which law ? Biot-savart ? Or perhaps some other one, like Faraday's !?
 
Thread closed for Moderation...
 
FlyJanasic said:
In my experiment, I intended to find out how the change in the bar magnet drop height from solenoid affected the emf induced in the solenoid, however, I am unable to come up with an equation that shows a relationship between the two variables.

I have thought of Biot-Savart law, but I do not think it is applicable since the law requires a current element, not a magnet.

Please do help me out as I am really scared and overstressing. I have seeked help and only made me more confused, so any help will be beneficial. Thanks!
Welcome to the PF. :smile:

This looks like lab work for school, right? If so, please re-post in the Homework Help, Introductory Physics or Engineering forum, and fill out the Homework Help Template you are provided there. This includes sections on the Relevant Equations and your Attempt at a Solution.

If it us just a personal experiment as you try to learn more about induction, please re-post in the Classical Physics forum, and as others have asked, please show much more of your work. A diagram of your setup would also be helpful.

Thank you. This thread here will remain closed.
 

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