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Electrical Connections, Third Edition

After detecting static charges with electroscopes, students differentiate between static and current electricity. The rest of the unit focuses on the transfer of electrical energy by electric current. Students build, operate, and analyze circuits, becoming skilled in assembling bulbs, batteries, wires, and switches. They explore the concepts of energy sources, receivers, and converters. Student-built galvanometers detect the presence, direction, comparative amount, and conservation of current in series and parallel circuits. Students also experiment with factors, like resistance, that influence current, and convert electrical to kinetic energy to operate a motor. The final current activities focus on three-way and dimmer switches. (13 Activities)