Calculating Current & Voltage in Coil with Magnet

AI Thread Summary
To calculate the induced current and voltage in a coil when a magnet passes through, the magnitude of the magnetic flux is essential. The magnetic flux depends on the strength of the magnet and its interaction with the coil. A rough estimate can be made using Faraday's law of electromagnetic induction, which states that the induced voltage is proportional to the rate of change of magnetic flux. The resistance of the coil, given as 16 ohms, will also affect the induced current calculated using Ohm's law. Understanding these principles allows for basic estimations of current and voltage in this scenario.
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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 forumla? 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...
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
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