# Uniform magnetic field in a spherical region

## Homework Statement

Is it possible to design a current winding that will produce a uniform magnetic field in a spherical region of space?

## Homework Equations

Well, the literature tells that the equation for the B-field for a uniformly magnetized sphere = (2/3)u_0 * M and also the magnetization current density = J = curlM may be helpful.

## The Attempt at a Solution

The truth is that I don't even have a clue where to begin or how to think. Really need some help on this one.

ideasrule
Homework Helper
What do you mean by "a uniform magnetic field in a spherical region of space"? Does the field have to be 0 outside the spherical region or something? If you just want a uniform field, a solenoid or Helmholtz coil can easily provide one. Define an arbitrary but small spherical region and you'd have a uniform field in a spherical region of space.

marcusl