Magnetic field strength effected by insulation of wire

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SUMMARY

The discussion centers on the impact of wire insulation on the magnetic field strength generated by conductors carrying current. It is established that insulation materials, which are non-ferrous and typically have lower magnetic permeability than air, do not significantly affect the magnetic field strength around the conductor. Both bare and insulated conductors produce similar magnetic field intensities, with the insulation's effect being negligible. The consensus is that only ferrous materials would meaningfully alter the magnetic field.

PREREQUISITES
  • Understanding of electromagnetic theory
  • Knowledge of magnetic permeability
  • Familiarity with conductor materials and their properties
  • Basic principles of current flow and magnetic fields
NEXT STEPS
  • Research the properties of different insulation materials and their magnetic permeability
  • Study the principles of electromagnetic fields in conductors
  • Learn about the design and application of shielded cables
  • Explore the effects of ferrous materials on magnetic fields
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Electrical engineers, physicists, and students studying electromagnetism who seek to understand the relationship between conductor insulation and magnetic field strength.

samieee
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Hello,
Suppose there are two conductors carrying currents. One of them is bare conductor and the other has insulation. Now magnetic field will be created around them due to the current flow through them. What will be the condition of magnetic field strength around them? They have same field intensity or intensity around bare conductor will be greater than insulated conductor? Please explain

Thanks
 
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samieee said:
Hello,
Suppose there are two conductors carrying currents. One of them is bare conductor and the other has insulation. Now magnetic field will be created around them due to the current flow through them. What will be the condition of magnetic field strength around them? They have same field intensity or intensity around bare conductor will be greater than insulated conductor? Please explain

Thanks

The insulation has no effect. Why would it?
 
berkeman said:
The insulation has no effect. Why would it?

Thanks for your reply. I guess insulation materials having lesser magnetic permeability than air will bring some effect (though negligible) isn't it?
 
samieee said:
Thanks for your reply. I guess insulation materials having lesser magnetic permeability than air will bring some effect (though negligible) isn't it?

A material would need to be ferrous to affect the magnetic field. Neither air nor wire insulation is ferrous.
 
The effect of the insulation is negligible. That is why you have shielded cable.
 
MrAnchovy said:
The effect of the insulation is negligible. That is why you have shielded cable.

hmmm
 

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