## 1. ELECTRICAL COMPONENTS• In mechanics we sum moments and forces, in electrical systems we sum current and voltage. • There are many analogies between mechanical and electrical systems. Superficially there appears to be major differences. But, the difference between finding forces in a truss, and calculating mesh currents is small. ## 1.1 MATHEMATICAL PROPERTIES## 1.2 EXAMPLE SYSTEMS## 1.3 PRACTICE PROBLEMS |