Written by education professionals to the specifications provided by NJATCs industry experts, each book in this series is carefully written to build knowledge through a wealth of illustrations, real-world situations, and step-by-step examples and procedures. NJATC-affiliated programs have trained over 30,000 electrical workers, and safety is always emphasized throughout all training materials. This series reflects the experience gained from this tremendous effort. In this volume you will find these outstanding features: coverage of magnetism, AC generators, impedance in RCL series circuits, Lenz's law, Q of a coil, types of power, power factor, filters and three-phase theory; basic algebra and trigonometry are explained and used to provide the math skills needed to succeed in the field; and complete, easy-to-follow explanations allow readers to form strong connections between concepts and real-world practices.