Ohm’s law, Kirchoff`s laws, loop and node equations, Cramer`s rule, Network theorems. Introduction to materials (Conductor, Semiconductor, Insulator). Band theory of solids. Types of diode and its applications (Half wave, Full wave rectifier, Clipper, clamper and etc.). Introduction to Transistor. Different configurations of transistors (Common Emitter, Common Collector, Common Base ).