The petroleum industry uses electricity in a number of ways. In lease operation, it is used for a wide range of applications from lighting to powering sophisticated computer production control systems. It is used for corrosion control, oil well pumping, pipeline pumping stations, and for operating equipment in refining plants. This book provides an overview of electricity and its uses in the oil and gas industry. Topics covered include: How electricity and circuits work Generation of electricity Electric motors Transformers Auxiliary equipment for electrical devices Measurement of electricity There are review questions at the end of each chapter. An appendix and a glossary add to the usability of the book.