The book ¿Basics of Electrical Engineering Science¿ elaborates in Nineteen chapters (460 pages) the Scientific principles and Applications of Basic Electricity. Basics of Electrical Engineering Science is the professional pre - requisite required before applying Laplace transformation, differential equations, matrices, complex numbers, etc. to design, model, simulate and analyse electrical process systems. Being a foundation course for Engineers, Technologists and Technicians in fields other than Electrical Engineering, the book could be useful to all Engineers, Technologists and Technicians working with electrically operated systems, equipment and components. Basic Electricity knowledge is necessary for troubleshooting of process and equipment, writing work requests and work permits for electrical maintenance of process and equipment. The book could be useful to all Engineering students and lecturers in Technical Colleges. Polytechnics and Universities. The test questions and answers embodied in Appendix 1 could aid quick revision of the Basics of Electrical Engineering Science.