Axial vs Equatorial Dipole Field

Magnetic Dipole Field · ch05-magnetism-and-matter

Compare axial and equatorial magnetic fields of a dipole and watch the 1/r^3 fall-off.

Controls

Magnetic moment m0.50 A m^2

radius r0.10 m

Live values

B_{ax} = \frac{\mu_0}{4\pi}\frac{2m}{r^3}

B_{eq} = \frac{\mu_0}{4\pi}\frac{m}{r^3}

Try this: Axial is twice equatorial at the same r — a quick sanity check.