Faraday's Law and EMF calculation

AI Thread Summary
The discussion focuses on calculating the electromotive force (EMF) using Faraday's Law. The user provides specific parameters, including the dimensions of the magnet surface, the number of coil windings, and the strength of the NdFeB magnet. The calculation yields an EMF of approximately -0.00399 volts per rotation. The user seeks confirmation on the accuracy of this calculation and mentions potential adjustments for the positioning of the coil windings. The inquiry emphasizes the importance of precise measurements and assumptions in EMF calculations.
barendfaber
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Hi,

I found this site with a calculation for EMF: http://www.6pie.com/faradayslaw.php. I just want to see if I have this right.

Magnet Surface: Height (0.05 m) * Width (0.004 m) = Area 0.0002 m2.
Coil windings: 6
Rotations per second: 5
NdFeB Magnet in N42 (1.33 Tesla) (I will reduce this as not all the coil windings will not be right next to the magnet surface)

EMF / V = -N * change in (( tesla * area meters squared)/ seconds)
= -6 * ((0.665 * 0.0002)/.2)
= -6 * 0.000665
= -0.00399

Is the above assumption of possible EMF per rotation correct?
 
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