Where Does the N in Faraday's Law of Induction Go?

AI Thread Summary
The discussion centers on the application of Faraday's Law of Induction, specifically addressing the role of the number of turns (N) in the context of induced electromotive force (EMF). The example illustrates how a wire moves through a magnetic field, leading to the calculation of EMF as the product of magnetic flux and the rate of change of area. It clarifies that in the provided scenario, N is effectively set to one, as only a single wire is considered. The conversation emphasizes that if multiple turns were included, the EMF would be multiplied by N, reflecting the cumulative effect of the turns on the induced voltage. Overall, the discussion highlights the importance of understanding how N influences the calculation of EMF in practical applications.
dbag123
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Hello

Lets take an example: imagine a horizontal magnetic field, then a wire of length L. I push the wire with a force F through the field perpendicularly with respect to the magn. field for a distance of dS.

EMF = work/charge

--> F*dS/I*dt, where F = flux density*current*lenght of conductor

--> Currents cancel each other out and Lenght of conductor multiplied by the distance moved = area

-->we are left with emf in simplified form of B*A/dt, and B*a = the change in magnetic flux
--> also add the minus from lenz's law

My question is Where does the N, or number of turns go?
Thanks
 
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In your example ##N## is the number of wires, you chose ##N=1##.
 
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