Magnetic field outside a conductor

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SUMMARY

The discussion clarifies that the magnetic field outside a conductor is not zero when current flows through it. Specifically, a copper wire carrying current generates a magnetic field around it, as described by Ampère's circuital law. The confusion arises from the distinction between conductors in equilibrium and those with current. Iron magnets, while conductive, also produce magnetic fields when current is present.

PREREQUISITES
  • Understanding of Ampère's circuital law
  • Basic principles of electromagnetism
  • Knowledge of conductors and their properties
  • Familiarity with magnetic field concepts
NEXT STEPS
  • Study Ampère's circuital law in detail
  • Explore the relationship between current and magnetic fields
  • Investigate the properties of conductors in different states
  • Learn about magnetic field visualization techniques
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Physics students, electrical engineers, and anyone interested in the principles of electromagnetism and magnetic fields around conductors.

dymondahlis
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Why is the magnetic field outside a conductor zero?
 
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Where did you read that it is such?

A copper wire with a current going through it is a conductor, but surely generates a magnetic field.

Maybe you mean a conductor in equilibrium, but still... An iron magnet is a conductor.
 

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