This text is designed to meet the requirements of BSc, BE and AMIE students. It is divided into 5 units and 15 chapters, dealing with the basic concepts of circuit fundamentals and electronics. The first unit contains three chapters which cover circuit fundamentals. The four remaining units contain 12 chapters covering basic electronics. The topics are presented in a systematic, logical and lucid manner and explained with the help of solved examples. Short and long answer type questions, and unsolved numerical and multiple choice questions are provided at the end of each chapter.