Magnetic Moment of a Current Loop

Bar Magnet · ch05-magnetism-and-matter

Vary current, turns and radius to see how the magnetic moment of a circular coil scales.

Controls

Number of turns N100

Current I0.50 A

radius r0.10 m

Live values

m = N I \pi r^2

Try this: The moment grows as r^2 — small radius changes have a big effect.