Calculating Current & Voltage in Coil with Magnet

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Discussion Overview

The discussion centers around calculating the induced current and voltage in a coil when a magnet passes through it. Participants explore the theoretical aspects of electromagnetic induction, focusing on the parameters of the coil and the magnet.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant inquires about the formula for calculating induced current and voltage in a coil with specific dimensions and resistance when a magnet passes through.
  • Another participant suggests that precision is not necessary and that a rough estimate would suffice.
  • A participant highlights that the "magnet" is an unknown variable, emphasizing the importance of the magnitude of the magnetic flux field for accurate calculations.
  • There is a question regarding whether "magnetic flux" refers to the strength of the magnet and whether an average value could be used in calculations.
  • Participants express openness to any ideas or suggestions regarding the calculations.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the specifics of the calculations, particularly regarding the role of the magnet's properties and the definition of magnetic flux. Multiple viewpoints on how to approach the problem remain present.

Contextual Notes

There are unresolved assumptions regarding the properties of the magnet and the definitions of terms like magnetic flux, which may affect the calculations.

Who May Find This Useful

This discussion may be of interest to individuals exploring concepts in electromagnetism, particularly those interested in practical applications of electromagnetic induction.

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I have been wondering how to calculate how much current and voltage would be induced through a 2m length of coil when a magnet passes through. The coil being 30mm in diameter with 1mm thick wire coiled around 200 times (for ease of calculation so cable would roughly be 18.8m long) with a resistance of say 16 ohms. Magnet being a cylindrical sphere of just under 30mm diameter... This is not homework, just wondered if there was a formula? many thanks.
 
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Dosent have to be precise. Any rough estimate will do. Thank you.
 


"Magnet" is an unknown variable in this hypothetical. Magnitude of magnetic flux field is critical for calculating induced current.
 


Magnetic flux? Is that the strength of the magnet? What if it were presumed to be average? Is there a formula?
 


any ideas most welcome...
 

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