Mesh analysis is a method used in electrical engineering to analyze circuits. It involves applying Kirchhoff's Voltage Law (KVL) to closed loops, or "meshes," in a circuit. By writing equations for each mesh, engineers can determine the current flowing through each component. This technique simplifies complex circuits by reducing the number of equations needed. It is particularly useful for planar circuits, where components can be drawn on a single plane without crossing wires. Overall, mesh analysis helps in efficiently solving for unknown currents and voltages in electrical networks.