All Problems

Constant Magnetic Field, Magnetics

Problem 3.224

A current \(I\) flows along a lengthy thin-walled tube of radius \(R\) with longitudinal slit of width \(h .\) Find the induction of the magnetic field inside the tube under the condition \(h \ll R\).

Reveal Answer
Bμ0hI/4π2Rr, where r is the distance from the cut. B \approx \mu_{0} h I / 4 \pi^{2} R r, \text { where } r \text { is the distance from the cut. }