... telephone system. 1.1 Electrical Engineering: An Overview Electrical engineering is the profession concerned with systems that produce, transmit, and measure electric signals. Electrical engineering ... needs. Custom Solutions—New options for textbook customization are now available for Electric Circuits, Ninth Edition. Please contact your local Pearson representative for details. PREREQUISITES ... high school or university level, that introduces the concepts of energy, power, electric charge, electric current, electric poten-tial, and electromagnetic fields. In writing the final six chapters,...