Technical Standards and Safety Authority (TSSA) G3 Practice Exam

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Prepare for the TSSA G3 Exam. Study with quizzes, flashcards, and multiple-choice questions. Each provides valuable hints and detailed explanations to ensure readiness for your exam!

Practice this question and more.

Power is measured in which of the following units?

Volts
Amps
Ohms
Watts

The correct answer is: Watts

Power is defined as the rate at which energy is consumed or converted in a system. In electrical terms, power is quantified in watts. One watt is equivalent to one joule per second, reflecting how much energy is used over a period of time. The relationship between power, voltage, and current is expressed in the formula P = V x I, where P represents power in watts, V represents voltage in volts, and I represents current in amperes (amps). This highlights that power is fundamentally tied to the product of voltage and current, solidifying watts as the unit of measurement for power. The other units listed serve different purposes in the study of electrical systems. Volts measure the potential difference or electric potential energy per unit charge, amps measure the flow of electric charge, and ohms quantify resistance in a circuit. Each of these units plays a crucial role in understanding electrical concepts, but only watts specifically measure power.