Can We Find an Electric Field Inside a Solenoid?

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Discussion Overview

The discussion revolves around the presence of an electric field inside a solenoid, exploring the relationship between electric fields and magnetic fields in the context of current-carrying wires and solenoids. Participants express confusion regarding the application of formulas related to electric fields and their connection to magnetic fields.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions whether an electric field can be found inside a solenoid, indicating confusion about the concept.
  • Another participant states that the electric field around a current-carrying wire is zero, implying a relationship to the solenoid's electric field.
  • A participant seeks clarification on the reasoning behind the claim that the electric field is zero around a current-carrying wire.
  • A participant mentions a formula for electric fields, E=Q/4pi_r^2, and relates it to magnetic fields, suggesting a proportionality to B/r^2.
  • Another participant points out that the formula mentioned resembles that for the electric field from a point charge but notes the absence of \epsilon_0.
  • A participant confirms that the formula is indeed for the electric field from a point charge and questions the meaning of B/r^2 in the context of a solenoid experiment.
  • One participant discusses the charge neutrality inside a current-carrying wire and suggests using a Gauss surface around the wire to analyze the electric field.

Areas of Agreement / Disagreement

Participants express differing views on the existence of an electric field inside a solenoid and the relevance of various formulas, indicating that the discussion remains unresolved with multiple competing perspectives.

Contextual Notes

There are limitations regarding the assumptions made about electric and magnetic fields, the definitions of terms used, and the mathematical relationships discussed, which remain unresolved.

Googl
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Can we find an electric field in a solenoid? Just a little confused
 
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The E field around a current carrying wire is zero.
 
Thanks,

Is there any reason why?
 
My teach is telling me that E=Q/4pi_r^2 is directly proportional to B/r^2

Does that make sense. The first formula is the formula used to find the electric field.
 
Googl said:
E=Q/4pi_r^2

What does this have to do with a solenoid? This looks like the formula for E from a point charge except it's missing an [itex]\epsilon_0[/itex].
 
Yes it is the formula E from a point charge.

What would the B/r^2 stand for in a solenoid experiment? I mean what would you use that for to find what?

And what about B/r

Thanks.
 
In a current carrying wire the sum of the charge in side would be zero. You could make a Gauss surface around the wire.
 

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