So, what we have here is a Manual of Laboratory Experiments. To know, understand, apply and control a phenomenon, which is the object of engineering, you have to measure it, assess the quantities involved and record the effects observed in facts and figures, so that others can study the observations and apply the results, without having to repeat the experiment. The British scientist, Sir William Thomson (Lord Kelvin, 1824 - 1907), concisely captured this aspect of knowledge where he wrote: "When you can measure what you are speaking about and express it in numbers, you know what you are talking about." The importance of experiments in science and engineering cannot be overemphasized. This manual is prepared after extensive simulations of the circuits with electronic workbench and Multisim. This manual designed to assist staff and students in the conduct of laboratory experiments. Each course of lectures should be supported and illustrated by laboratory experiments. Indeed, students remember experiments they conducted much more than they recall lectures they have taken. The texts have been written in simple technical language and the mathematics behind each experiment clearly derived and explained. The book is of great value to Physics, Electrical and Electronic and Telecommunication Engineering students in Tertiary institutions (Polytechnics, Monotechnics and Universities). The handbook contains 11 experiments, each contains, objectives, materials, preparation and procedure. The procedure involves steps and questions to aid in understanding the experiments being conducted. We wish to seize this opportunity to express our profound gratitude to all those that made the preparations, conduct of the experiments and the publication of this handbook possible. We are particularly grateful to all the technical staff of the department of Electrical and Electronics Engineering, Federal University of Technology Minna and University of Ado-Ekiti for their priceless support during the testing of the experiments.