How does this kind of DC motor work?

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SUMMARY

This discussion centers on the operation of a DC motor, specifically addressing the source of the magnetic field generated within the motor. Participants clarify that the magnetic field is produced by the current flowing through the coils, which interact with the permanent magnets or electromagnets in the motor. The inquiry also touches on the feasibility of calculating the magnetic field without specialized equipment, emphasizing the importance of understanding the relationship between current, magnetic fields, and motor functionality.

PREREQUISITES
  • Understanding of basic electromagnetism principles
  • Familiarity with DC motor components and their functions
  • Knowledge of Ohm's Law and its application in circuits
  • Ability to interpret and apply basic physics equations related to magnetic fields
NEXT STEPS
  • Research the principles of electromagnetism in relation to DC motors
  • Learn about the role of coils and magnetic fields in motor operation
  • Explore methods for calculating magnetic fields using Ampere's Law
  • Investigate the differences between brushed and brushless DC motors
USEFUL FOR

Students studying electrical engineering, hobbyists building or repairing DC motors, and educators teaching principles of electromagnetism and motor mechanics.

jhast1
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Homework Statement


I used a similar motor to this one in a prac, and then realized that the arms either side of the coils were not magnetised. I was wondering where the magnetic field comes from, and without any special equipment is it possible to calculate it?


Homework Equations


t=bain
 
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Isn't the purpose of the coil at the bottom of the motor to produce a magnetic field?
 

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