Electric field intensity 'inside' a wire carrying current

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SUMMARY

Electric field intensity does exist inside a wire carrying current, as confirmed by the principles of Ohm's Law. The relationship between current density (J) and electric field intensity (E) is defined by the equation J = σE, where σ represents the conductivity of the material. This indicates that wherever there is a current density, an electric field is present within the wire. Understanding this relationship is crucial for analyzing electrical circuits and material properties.

PREREQUISITES
  • Understanding of Ohm's Law
  • Familiarity with electric field concepts
  • Knowledge of current density and conductivity
  • Basic principles of electromagnetism
NEXT STEPS
  • Study the derivation and applications of Ohm's Law in various materials
  • Explore the relationship between electric field intensity and current density in conductors
  • Investigate the effects of different materials on conductivity
  • Learn about the implications of electric fields in circuit design and analysis
USEFUL FOR

Students of physics, electrical engineers, and anyone interested in understanding the behavior of electric fields in conductive materials.

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I am new here and asking question for the first time of course. My question is very simple. Does electric field intensity exist 'inside' a wire carrying current? Please explain the answer.
 
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undetermined said:
Does electric field intensity exist 'inside' a wire carrying current? Please explain the answer.
Yes. Wherever there is a current density there is an electric field given by Ohm's[/PLAIN] law: [itex]\mathbf{J} = \sigma \mathbf{E}[/itex]
 
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