Determine resistance of a generator

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SUMMARY

The resistance of an electrical generator can be determined using the Lorentz force formula, which incorporates the electric field, particle velocity, magnetic field, and electric charge. While the original poster lacked specific values for these parameters, they did have information on the required RPM for a certain voltage. By calculating the current, which is the rate of flow of charge, it is possible to derive the necessary values to apply the Lorentz formula effectively. The discussion emphasizes the importance of understanding these variables for accurate resistance calculations.

PREREQUISITES
  • Understanding of the Lorentz force formula
  • Knowledge of electric fields and magnetic fields
  • Familiarity with RPM and voltage relationships in generators
  • Basic principles of electric charge and current
NEXT STEPS
  • Research the Lorentz force equation and its applications in electrical engineering
  • Learn how to calculate electric fields and magnetic fields in generator systems
  • Study the relationship between RPM, voltage, and current in electrical generators
  • Explore resources on coil design and the impact of windings on generator performance
USEFUL FOR

Electrical engineers, physics students, and anyone involved in the design or analysis of electrical generators will benefit from this discussion.

Ry122
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What formula can I use to determine the resistance of an electrical generator?
 
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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.
 
http://users.on.net/~rohanlal/58c2b8b14b73d2bafeaaafb80b4a5491.jpg
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?
 
Last edited by a moderator:
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?
 
Ry122 said:
With that would I be able to determine the other required values?
http://www.physclips.unsw.edu.au/jw/electricmotors.html#mandg" is a good reference from the UNSW.
 
Last edited by a moderator:
It isn't a homemade generator so i don't know the number of windings in the coil or the area of the coil.
 

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