Texas Esthetician License Practice Exam

What unit measures the amount of electric current flowing through a conductor?

1. Volt

2. Watt

3. Ohm

4. Ampere

The correct answer is: Ampere

The unit that measures the amount of electric current flowing through a conductor is called the Ampere. It is often abbreviated as "A." Understanding this unit is crucial for estheticians, especially when using electrical equipment, as it helps in determining the flow of electrical current required for various devices like facials and hair removal tools. The Ampere quantifies how many electrons are flowing through a circuit, which is fundamental when considering safety and efficacy in aesthetic practices. Knowing how to read current levels can help estheticians ensure the equipment operates effectively without risk of overloading or malfunctioning. In contrast, the Volt measures electrical potential difference or voltage, while the Watt is a unit of power that describes how much energy is used per second. The Ohm represents resistance within a circuit, which is crucial for understanding how different materials and tools might affect the flow of current. Therefore, when discussing electric current specifically, the Ampere stands out as the correct measure.