Utah Esthetician State Board Practice Exam 2026 - Free Esthetician Practice Questions and Study Guide

The unit that represents the base measurement of electrical current is the ampere, commonly referred to as "amp." This unit measures the flow of electric charge, indicating the amount of electricity that is flowing through a conductor.

In the context of electrical systems, current (measured in amps) is essential for understanding how much electrical flow is present in a circuit. A higher number of amps signifies a greater flow of charge, which is fundamental for the operation of various electrical devices used in esthetics, such as machines for facials or other treatments.

The other units listed serve different purposes: ohms measure resistance, volts measure electrical potential, and watts measure power, which is the product of voltage and current. Each of these concepts is interconnected within the field of electricity, but when focusing specifically on current, the amp is the definitive unit used.