| 1. | is non-zero and points in the z-direction by symmetry |
| 2. | points along the axis of the toroid (\(m = m\vec{\phi}\) ) |
| 3. | is zero, otherwise, there would be a field falling as \(\frac{1}{r^{3}}\) at Lange distances outside the toroid |
| 4. | is pointing radially outwards |
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