INDUSTRIAL ELECTRICITY, Ninth Edition, presents the essentials of electrical theory in a clear, current, logical manner to help students master both fundamental concepts and more advanced subjects relevant to the field of industrial electricity. Coverage begins with foundational topics like electrical symbols and drawings, current, voltage, resistance, and power, while subsequent chapters introduce Ohm’s Law; series, parallel, and combination circuits; and resistive and reactive circuits. The text also includes thorough discussion of advanced subjects such as rotating machinery, motor controls, transformers, electronic drives, and PLCs, as well as practical information on key real-world applications of electrical theory, including installation, maintenance, and troubleshooting. The Ninth Edition features more than 800 illustrations and photos to help explain key concepts and bring theory and practice alike to life for today’s students.