Ace LMS Substation 2025 – Level II: Electrify Your First Year Success!

The purpose of voltage in an electrical circuit is to cause electrons to flow. Voltage is essentially an electrical potential difference between two points in a circuit, and it acts as the driving force that pushes electrons through the conductive materials. When voltage is applied, it creates an electric field that influences the movement of electrons, promoting their flow from areas of higher potential to areas of lower potential. This flow of electrons constitutes electric current, which is essential for powering devices and performing work within the circuit.

While resistance is a crucial aspect of circuits, it does not increase due to voltage; rather, it is a property of the materials used. Therefore, increasing resistance does not align with the purpose of voltage. Similarly, while thermal energy can result from current flow due to resistance (Joule heating), it is not the primary function of voltage. Finally, voltage itself is not used to measure current; it is measured by devices like voltmeters, whereas current is measured with ammeters. Understanding that voltage serves as the catalyst for electron movement helps clarify its vital role in electrical circuits.