Total Current, Circular Cross Section

• This problem is used in the following sequences

  1. << Acting Out Current Density | Integration Sequence | Total Current, Square Cross-Section >>

• Static Fields 2023 (6 years)

  A current \(I\) flows down a cylindrical wire of radius \(R\).

  1. If it is uniformly distributed over the surface, give a formula for the surface current density \(\vec K\).
  2. If it is distributed in such a way that the volume current density, \(|\vec J|\), is inversely proportional to the distance from the axis, give a formula for \(\vec J\).