Which of the following are the primary electrical quantities measured in electrical work?

The primary electrical quantities measured in electrical work include voltage, current, and resistance, which are fundamental to understanding how electrical circuits operate.

Voltage is the electrical potential difference between two points and is crucial as it drives the current through the circuit. Current is the flow of electric charge, which is essential for completing any electrical work, and resistance is the opposition to current flow within a circuit. These three quantities are related through Ohm’s law, which states that voltage equals current times resistance (V = I × R). This relationship underpins the analysis of electrical circuits and allows for calculations related to power and energy usage in electrical work.

Understanding how these three quantities interact is vital for any electrical apprenticeship, as they form the foundation for troubleshooting and designing electrical systems.