Technical Standards and Safety Authority (TSSA) G3 Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

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.

Which unit is commonly used to measure voltage in electrical systems?

Watts
Amperes
Volts
Ohms

The correct answer is: Volts

Voltage in electrical systems is measured in volts. The unit of voltage, known as the volt, quantifies the electric potential difference between two points. This potential difference affects how much current can flow through a circuit when a certain resistance is present. The relationship between voltage, current, and resistance is defined by Ohm's Law, which states that voltage equals current (in amperes) multiplied by resistance (in ohms). Understanding that volts measure the force behind electron movement in a circuit is crucial for anyone working with electrical systems, as this fundamental concept underpins operations in electrical engineering, circuit design, and troubleshooting. The other choices—watts, amperes, and ohms—represent power, current, and resistance, respectively, and while they are all important terms in electrical theory, they are not units of measurement for voltage.