... potential and e.m.f. 51.7 Resistance and conductance 51.8 Electrical power and energy 61.9 Summary of terms, units and their symbols 72 An introduction to electric circuits 92.1 Electrical/ electronic ... 23/7/2007 17: 52 page i Electrical and Electronic Principles and TechnologyPrelims-H8556.tex 23/7/2007 17: 52 page xiPreface Electrical and Electronic Principles and Technology,3rd Edition introduces ... diodes and transistors, and additional material on batteries, fuel cells and alter-native and renewable energies, relative and absolutevoltages, self and mutual inductance, virtual test and measuring...