Lag1989 task №16.47

Lag1989 task №16.47

A coaxial cable is a long metal thin-walled tube with a radius of R = 8 mm, along the axis of which a thin wire is located. The currents in the tube and wire are equal and directed oppositely. Find the magnetic induction at points remote from the cable axis at a distance: a) r₁=8mm; b) r₂=12mm if current I=1A.

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