5. Find the magnetic field both inside and outside of an infinitely long coaxial cable that carries current I in opposite directions its conductors. The radius of the inner wire is a, the radius of the outer cylindrical conducting shell known ans “shield" is b. You can assume an infinitely thin shield. Also assume that the inner wire has a uniform current density. Use Ampère's circuital law (that is, the law relating the circulation of the magnetic field to the enclosed current). Make nice sketches – in particular for the calculation of currents. Also sketch your final answer, the dependence of the magnetic field on the radius. Can you see why the outer conducting shell is known as shield? How would you sketch of the answer change if the shield had a finite width? [8] plastic jacket metallic shield dielectric insulator centre core
5. Find the magnetic field both inside and outside of an infinitely long coaxial cable that carries current I in opposite directions its conductors. The radius of the inner wire is a, the radius of the outer cylindrical conducting shell known ans “shield" is b. You can assume an infinitely thin shield. Also assume that the inner wire has a uniform current density. Use Ampère's circuital law (that is, the law relating the circulation of the magnetic field to the enclosed current). Make nice sketches – in particular for the calculation of currents. Also sketch your final answer, the dependence of the magnetic field on the radius. Can you see why the outer conducting shell is known as shield? How would you sketch of the answer change if the shield had a finite width? [8] plastic jacket metallic shield dielectric insulator centre core
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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![5. Find the magnetic field both inside and outside of an infinitely long coaxial cable that
carries current I in opposite directions its conductors. The radius of the inner wire is a,
the radius of the outer cylindrical conducting shell known ans “shield" is b. You can
assume an infinitely thin shield. Also assume that the inner wire has a uniform current
density. Use Ampère's circuital law (that is, the law relating the circulation of the
magnetic field to the enclosed current). Make nice sketches – in particular for the
calculation of currents. Also sketch your final answer, the dependence of the magnetic
field on the radius. Can you see why the outer conducting shell is known as shield?
How would you sketch of the answer change if the shield had a finite width? [8]
plastic jacket
metallic shield
dielectric insulator
centre core](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6c05f44e-1e85-44a5-90ba-7813ec8293ca%2F643df52f-ddbe-435e-bc70-1aca7c0e5adf%2Frrggif_processed.png&w=3840&q=75)
Transcribed Image Text:5. Find the magnetic field both inside and outside of an infinitely long coaxial cable that
carries current I in opposite directions its conductors. The radius of the inner wire is a,
the radius of the outer cylindrical conducting shell known ans “shield" is b. You can
assume an infinitely thin shield. Also assume that the inner wire has a uniform current
density. Use Ampère's circuital law (that is, the law relating the circulation of the
magnetic field to the enclosed current). Make nice sketches – in particular for the
calculation of currents. Also sketch your final answer, the dependence of the magnetic
field on the radius. Can you see why the outer conducting shell is known as shield?
How would you sketch of the answer change if the shield had a finite width? [8]
plastic jacket
metallic shield
dielectric insulator
centre core
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