What formula can I use to determine the resistance of an electrical generator?
by resistance i mean the force from the magnets that is slowing down the rotation of the coils.
since no one has replied i guess its safe to assume its not possible to calculate.
It is most definitely possible to calculate the force, it is a simple application of the the Lorentz force.
Perhaps no one replied because you don't seem to have put any effort into trying to figure it out yourself.
This is the Lorentz formula. It requires me to know the electric field,the particle velocity, magnetic field and the electic charge. I know none of these values.
All I know is how many rpm are required for a certain voltage to be generated.
Is it possible to calculate the force generated with just this information?
You would also know, or could work out the current, which is the rate of flow of charge.
With that would I be able to determine the other required values?
http://www.physclips.unsw.edu.au/jw/electricmotors.html#mandg" [Broken] is a good reference from the UNSW.
It isnt a homemade generator so i dont know the number of windings in the coil or the area of the coil.
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