EngineeringCollege
Circuit Analysis
Master the analysis of electrical circuits using fundamental laws and theorems.
1Introduction
Circuit analysis is the foundation of electrical engineering, used in electronics, power systems, and communications.
2Fundamentals
V = IR
Series
R_total = R1 + R2 + ...
Parallel
1/R_total = 1/R1 + 1/R2
3Circuit Analysis
- KCL: Sum of currents at node = 0
- KVL: Sum of voltages around loop = 0
- Nodal Analysis: Apply KCL at each node
- Mesh Analysis: Apply KVL around each mesh
4Network Theorems
- Superposition: Sum responses from each source
- Thevenin: Equivalent voltage source and resistance
- Norton: Equivalent current source and resistance
- Maximum Power Transfer: R_load = R_th
Test your understanding — select the correct answer.
1.Ohm's Law states:
2.Resistors in series:
3.Resistors in parallel:
4.Kirchhoff's Current Law (KCL) states:
5.Kirchhoff's Voltage Law (KVL) states:
6.Power in a resistor:
7.Voltage divider formula:
8.Capacitor stores energy in:
9.Inductor stores energy in:
10.Thevenin equivalent resistance: