How does the amperage behave in a series circuit with multiple devices?

In a series circuit, the amperage behaves in a way that it remains constant throughout the entire circuit. This is because, in a series configuration, the same current flows through all the devices connected one after the other. When a circuit is completed with multiple devices, each device adds resistance, but the overall current (amperage) does not increase or decrease; it just consistently flows at the same rate across each device.

For example, if there are three light bulbs connected in series and the circuit allows a certain amount of current to flow, this same amount of current will pass through each light bulb without variation. This is a fundamental principle of series circuits governed by Ohm's law, which states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance. Thus, the correct understanding is that the current remains constant when devices are connected in series, regardless of how many devices are present in the circuit.

This concept is essential for anyone working with electrical systems, such as those in burglar alarm systems, as it affects how the circuit operates and how devices are designed to function together.