The author introduces electrical principles and technology through examples rather than theory - enabling students to develop a sound understanding of the principles needed by technicians in fields such as electrical engineering, electronics and telecommunications. Over 600 problems and 400 worked examples are included. No previous background in engineering is assumed, making this a useful text for vocational courses and introductory courses for undergraduates. This edition has been brought fully in line with the BTEC National specification for the units: electrical and electronic principles and further electrical and electronic principles, and the corresponding AVCE units. It is also designed to cover the requirements of Intermediate GNVQ and the BTEC First specifications. At intervals through the text assessment papers are provided, which should be useful for tests or homeworks. These are the only problems where answers are not provided in the book, but fully worked solutions are available to lecturers only as a free download from the password-protected tutor's area of www.newnespress.com.