In a series circuit, how does current behave?

In a series circuit, the current remains constant throughout all components connected in the circuit. This means that every component, regardless of its resistance, will experience the same amount of current flowing through it at any given time. This behavior is due to the nature of series connections, where the same electric charge has only one path to take. As the charge moves through the circuit, it does not accumulate or decrease; instead, it maintains a uniform flow as dictated by Ohm's Law.

Understanding this is fundamental in electrical theory, as it highlights how series circuits differ from parallel circuits, where current can split and therefore may vary. The idea that the current is constant helps in calculating total resistance and understanding how voltage drops across each component in the series.