Nodal voltage refers to the electrical potential difference at a specific point, or node, in an electrical circuit. It is measured relative to a common reference point, usually the ground. Understanding nodal voltage is essential for analyzing circuits, as it helps determine how voltage is distributed across different components. In circuit analysis, the Nodal Analysis method is often used to calculate nodal voltages. This technique involves applying Kirchhoff's Current Law to each node, allowing engineers to solve for unknown voltages efficiently. By knowing the nodal voltages, one can predict how current flows through the circuit and the behavior of various components.