Explore In the AC generated illustrated above, a conducting loop rotates in the magnetic field of two permanent magnets. The magnetic field lines fill the gap from north to south. As the loop rotates, the magnetic flux through the loop changes from maximum in a given orientation to zero, then to maximum in the opposite orientation. This produces an induced voltage in the loop that is sinusoidal, where N is the number of turns in the rotating loop (N = 1 in the animation), B is the magnetic field produced by the permanent magnets, A is the area of the rotating loop, and ω is the angular frequency of the rotating loop.4