Understanding Electric Field Lines: An Introduction to E Bar and Tangent Vectors

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Discussion Overview

The discussion revolves around the concept of electric field lines and the relationship between the electric field vector, denoted as E bar, and tangent vectors at various points along these lines. Participants explore the meaning of "tangent" in this context, referencing geometric principles and visual aids.

Discussion Character

  • Conceptual clarification
  • Exploratory

Main Points Raised

  • One participant seeks clarification on the term "tangent" as used in the context of electric field lines.
  • Another participant suggests that the electric field vector E is parallel to the electric field line at any given point.
  • Several participants reference external resources, including a Wikipedia article on tangents in geometry, to aid understanding.
  • Visual aids are mentioned as helpful for understanding how the electric field behaves along curved field lines.

Areas of Agreement / Disagreement

There is no explicit consensus on the definition of "tangent" as it relates to electric field lines, and participants express varying levels of understanding and seek further clarification.

Contextual Notes

Some assumptions about prior knowledge of geometry and electric fields may not be explicitly stated, which could affect the clarity of the discussion for all participants.

Andy_Taiwanese
Hi, I'm reading the textbook and there is my image.
http://imgur.com/a/9BqHm

It says "The field vector E bar is tangent to the electric field line at each point".
I might want to ask what "tangent" means in this sentence? Sorry to ask that stupid question.
 
Physics news on Phys.org
It means any electricfield-line is parallel with electricfield vector ##\vec E## at any point.
 
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