Note that the amount of voltage changes over time. Much like a DC generator, an AC generator requires a coil to cut across the force lines of a magnetic field. This coil is attached to two slip rings, which deliver the current to and from the load destination, thus completing the circuit. Alternating current generators are often called alternators. During the first half turn, the coil cuts across the field near the magnet's north pole.
Electrons travel up the wire, and the lower slip ring becomes positively charged.
When the coil cuts near the South Pole of the wire during the second half turn, the lower slip ring becomes negatively charged, and electrons move down the wire. All Rights Reserved . No images, graphics, software, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders.