A long straight wire of radius a carries a steady current i. The curre – InterviewSolution

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1.	A long straight wire of radius a carries a steady current i. The current is uniformly distributed across its cross section. The ratio of magnetic field at a/4 inside and a/4 outside from the surface of wire is
Answer» A long straight wire of radius a carries a steady current i. The current is uniformly distributed across its cross section. The ratio of magnetic field at a/4 inside and a/4 outside from the surface of wire is

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