A series circuit is a type of electrical circuit where components are connected end-to-end in a single path. This means that the electric current flows through each component one after the other. If one component, like a light bulb, fails or is removed, the entire circuit is interrupted, and all devices stop working. In a series circuit, the total voltage is divided among the components, and the same current flows through each one. This setup is often used in simple applications, such as string lights or flashlights, where the design is straightforward and easy to manage.