Electrical circuit analysis is the process of determining the voltages, currents, and power dissipations within an electrical circuit. It employs fundamental laws like Ohm's Law (V=IR) and Kirchhoff's Laws (voltage and current conservation) to model circuit behavior. Techniques such as nodal analysis, mesh analysis, superposition, and Thevenin/Norton equivalents simplify complex circuits. Understanding circuit analysis is crucial for designing, troubleshooting, and optimizing electrical systems, from simple household circuits to complex electronic devices. It forms the foundation for further studies in electronics, power systems, and telecommunications.