How is "voltage" defined?

Voltage is defined as the electrical potential difference between two points in a circuit. It represents the energy per unit charge that is available to move electrons through a conductor, effectively causing the flow of electric current. This potential difference is what drives the current through electrical devices, enabling them to function.

Understanding voltage is crucial for electricians and anyone involved in electrical work, as it directly relates to how much energy is provided to power devices. The higher the voltage, the more potential energy is available to push the electric charge through a circuit, enabling various functions and performance of appliances and equipment.

In practical terms, when measuring voltage, tools like a voltmeter are used to determine this potential difference across components in a circuit, which can help troubleshoot connections and ensure that systems are operating as intended. Knowing how voltage works helps in designing and implementing safe and effective electrical systems.