NATE Core Practice Test 2025 – All-in-One Guide to Master Your Certification!

In a series circuit, the behavior of voltage is characterized by division among the loads connected in the circuit. This occurs because the total voltage supplied by the source is distributed across all the components in the series as per their resistance values.

As electric current flows through each load, a portion of the total voltage is "dropped" across each one according to Ohm's Law, which states that voltage (V) is equal to current (I) times resistance (R). Because all components share the same current in a series circuit, the voltage across each load can vary depending on its individual resistance.

This voltage division is fundamental to the circuit's operation, allowing each device to function properly. It contrasts with parallel circuits, where the voltage across each load remains constant and is equal to the total supply voltage. Understanding this principle is essential for analyzing and troubleshooting series circuits effectively.