Network Theory Notes Gate 2026
Chapter 1: Fundamentals
- Network Components
- Ohm’s Law
- Current & Voltage
- Capacitance, Inductance (L, C) and Resistance (R)
- Dependent and Independent Sources
- Kirchhoff’s Current Law (KCL) & Voltage Law (KVL)
- Source Transformation (SC, OC)
- Current & Voltage Division
- Ratings and Specifications
Chapter 2: Methods of Analysis
- Mesh Analysis
- Nodal Analysis
Chapter 3: DC Network Theorems & Applications
- Superposition Theorem
- Thevenin’s Theorem
- Norton’s Theorem
- Maximum Power Transfer Theorem
- Tellegen’s Theorem
- Reciprocity Theorem
- Millman’s Theorem
- Compensation Theorem
- Substitution Theorem
Chapter 4: Time Variance
- Introduction to Inductors and Capacitors
- Properties and behavior under different excitations
Chapter 5: Steady-State AC Circuit Analysis
- Sinusoidal Signals & Phasors
- Voltage/Current Phasor Relationships
- RMS Value
- Methods of AC Circuit Analysis
- AC Network Theorems
- Complex Power & Power Factor
- Duals and Duality
- Locus Diagrams
- Electrical Resonance
- Selectivity
- Magnetic Circuits
Chapter 6: Electrical Transients
- Transients in Circuits
- State Variables & Initial Conditions
- Behavior of Passive Elements
- Order of Circuits
- Total Response = Natural Response + Forced Response
- Step Response (1st Order & 2nd Order)
- Source-Free Response (2nd Order)
- Laplace Transform Approach
- Complete Solution of Transient Circuits
Chapter 7: Two-Port Networks
- Concept of Symmetry
- Z, Y, h, g Parameters
- ABCD & A′B′C′D′ Parameters
- Interconversion of Parameters
- Two-Port Network Parameters and Properties
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Conclusion
Mastering Network Theory is essential for building a strong foundation in circuit analysis. Each topic not only strengthens problem-solving ability but also connects directly with advanced subjects like Control Systems, Analog Electronics, and Signals & Systems. Consistent practice of numerical problems and past year GATE questions will ensure accuracy and confidence.
