Circuit configurations refer to the arrangement of electrical components in a circuit, which can significantly affect its performance. Common configurations include series circuits, where components are connected end-to-end, and parallel circuits, where components are connected across the same voltage source. Each configuration has distinct characteristics, such as voltage distribution and current flow. In a series circuit, the same current flows through all components, while the total voltage is divided among them. In contrast, a parallel circuit allows multiple paths for current, ensuring that each component receives the same voltage. Understanding these configurations is essential for designing effective electrical systems.