Which unit measures electric potential difference?

The unit that measures electric potential difference is the Volt. Electric potential difference, often referred to as voltage, signifies the amount of work needed to move a unit of electric charge between two points in an electric field. It determines the force that pushes the electric current through a circuit, allowing devices to function.

Understanding voltage is essential in the fields of electricity and electronics, as it influences how much current will flow in a circuit for a given resistance, as described by Ohm's law. This relationship highlights the significance of voltage in practical applications, such as powering light bulbs or electronic devices. The other units listed serve different purposes: Watts measure power, Hertz measures frequency, and Ohms measure electrical resistance, making them unrelated to the concept of electric potential difference.