Magnetic Moment for a Current Loop (Electric Motors)

1.7.1
The magnitude of the magnetic moment m for a current loop is equal to the loop area na2 times the current I (see Fig. 1.31). The direction of the magnetic moment m is in the direction of the thumb as the fingers of the right hand follow the current I.
tmp54F80_thumb_thumbMagnetic moment for a current loop.
FIGURE 1.31 Magnetic moment for a current loop.