This is the first science experiment kit to thoroughly explore alternating current (AC) in addition to the more commonly addressed direct current (DC), the unidirectional current from standard batteries. With this kit, you can safely experiment with the physical science theories and applications of electricity. Conduct 110 experiments to investigate electrical engineering from AC to DC. Start by exploring the basics of electric current by building simple circuits with batteries, switches, and lights. Build series and parallel circuits as well as more complex circuits such as a traffic signal and alarm system. This kit offers a thorough exploration of the physical science theories and applications of electricity.