Magnetic field from a thin current-carrying cylinder

AI Thread Summary
The discussion centers on finding the magnetic field outside a thin hollow cylinder carrying a steady current. The original poster's solution contradicts Ampere's Law, raising questions about its application. Participants emphasize the need for consistency between their derivation and Ampere's Law, particularly in relation to infinite DC current-carrying wires. Clarification on the correct use of Ampere's Law is sought to resolve discrepancies. The conversation highlights the importance of aligning theoretical derivations with established electromagnetic principles.
sombr1o
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The question is to find the magnetic field immediately outside a thin hollow cylinder that carries a uniform steady current I on its surface. This is my solution but what I get contradicts amperes law.
 

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Your own derivation aside, do you understand how Ampere's Law is used to derive the magnetic field for an infinite DC current carrying wire?
 
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Born2bwire said:
Your own derivation aside, do you understand how Ampere's Law is used to derive the magnetic field for an infinite DC current carrying wire?
Yes, but the thing is that you should get the same thing with Amperes Law and my own derivation
 

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