Also explored are a brief history of the development of the light bulb and Edison's critical role in the methodology of experimental science, which set the subsequent standard for industrial research. A teacher's guide to all experiments, related mathematical problem sets, and solutions is included the module. This unit provides a natural tie to studies in economics and US history that involve the electrification of society, the industrial revolution, the rivalry between AC and DC distribution systems, and the growth of industrial laboratories. Students require a previous introduction to Ohm's Law and series and parallel circuits before beginning this unit. These experiments are aimed at grades 7-12, but would also be appropriate for an introductory university physics or materials science course.
Energy is transferred in many ways.
Electrical circuits provide a means of transferring electrical energy when heat. In some materials, such as metals, electrons flow easily, whereas in insulating material they can hardly flow at all.