Circular Coil vs Solenoid: What's the Difference?

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Discussion Overview

The discussion centers on the differences between a circular coil of wire and a solenoid, exploring their definitions, geometrical characteristics, and common perceptions in practical applications. The scope includes conceptual clarification and technical explanation related to electromagnetism.

Discussion Character

  • Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions the difference between a circular coil and a solenoid.
  • Another participant suggests that a solenoid is essentially a circular coil with many turns.
  • A third participant clarifies that the term "solenoid" often refers to a mechanical device with a movable core, distinguishing it from a simple coil.
  • One participant describes a solenoid as a "stretched out" coil, emphasizing its cylindrical geometry and significant length.
  • A later reply indicates that a circular coil can be considered to have negligible length while maintaining the same radius.

Areas of Agreement / Disagreement

Participants express differing views on the definitions and characteristics of circular coils and solenoids, indicating that multiple competing perspectives remain without a clear consensus.

Contextual Notes

Participants rely on varying interpretations of terms like "solenoid" and "circular coil," which may depend on context or application. The discussion does not resolve the mathematical or physical distinctions between the two concepts.

pardesi
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what' the differnece between a circular coil of wire of many turns and a solenoid.
 
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Isn't that exactly what a solenoid is: a circular coil of wire with lots of turns in it?
 
Correct. But by 'popular' terminology, most people think of a solenoid as being a mechanical device consisting of a moveable core within the solenoid coil, as in an automotive starter or a model train track switch.
 
To me, a solenoid is a "stretched out" coil, that is, its geometry is a cylinder, and the length is significant.
 

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thanks that seems logical now...becaus ei was working out through the formulaes for the magnetic field due to each...

so circular coil is a coil of negligible length and same radius
 

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