What is the primary function of voltage in an electrical circuit?

The primary function of voltage in an electrical circuit is to cause electrons to move through the circuit. Voltage, often referred to as electric potential difference, serves as the driving force that pushes electrons from a region of high potential to a region of low potential. This movement of electrons constitutes an electric current, which is essential for the operation of electrical devices and circuits.

Understanding this role of voltage is fundamental in studying how electrical circuits operate. While storing electrical energy, measuring resistance, and regulating temperature are all important aspects of electrical systems, they do not directly describe the primary role of voltage in instigating the flow of current. The ability of voltage to influence electron movement is what enables circuits to perform their functions, whether it be powering devices, lighting bulbs, or facilitating communication signals.