This 1992 book provides a comprehensive introduction to the theory of electrical circuits for students in the physical sciences taking a first course in electronics. The methods of circuit analysis are clearly explained and illustrated with the aid of numerous worked examples. Applications of the theory relevant to the fields of electronics, telecommunications and power systems are treated throughout. These sections will prepare students for more advanced courses. The text is written for first and second year undergraduate courses in electronics for science and engineering students. The more specialised sections also provide some advanced material which is covered in third year courses.