DC circuits: Concept of R, Energy Sources, Ohm’s Law - Kirchoff’s Laws - Series and parallel circuits - Ideal and Practical sources – Mesh and nodal analysis. AC circuits: Concept of L and C, Energy Sources, Waveforms, instantaneous value, peak value, average value, effective value

UNIT II THEOREMS FOR DC CIRCUITS 9 Network reduction: voltage and current division rules, source transformation – star / delta conversion. Theorems: Thevenin’s and Norton’s Theorem – Superposition Theorem – Maximum power transfer theorem – Reciprocity theorem.

Single phase circuits: RL, RC, RLC series circuit, Complex Impedance, Real and Reactive Power, Power factor calculations. Application to AC load. Three phase circuits: Phase and line values – phasor diagrams- analysis of three phase 3-wire and 4 wire circuits with balanced loads & un balanced loads.

Series resonance – frequency response – Quality factor and Bandwidth – Parallel Resonance (RL & RC circuit only) - Self and mutual inductance – Dot Rule - Coefficient of coupling – Single tuned circuits..

Introduction - Transient response of RL, RC and RLC series circuits using Laplace transform for DC input – Transient response of RLC series circuit for AC input