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A wire of nonmagnetic material, with radius R, carries
Chapter 32, Problem 77(choose chapter or problem)
A wire of nonmagnetic material, with radius R, carries current uniformly distributed over its cross section. The total current carried by the wire is I. Show that the magnetic energy per unit length inside the wire is .
Questions & Answers
QUESTION:
A wire of nonmagnetic material, with radius R, carries current uniformly distributed over its cross section. The total current carried by the wire is I. Show that the magnetic energy per unit length inside the wire is .
ANSWER:Step 1 of 2
The current density can be given as,
Applying the Ampere’s law, the magnetic field at a particular distance of can be given as,