HVAC Excellence Electrical Certification Practice Exam 2025 – The All-in-One Guide to Master Your Certification!

Question: 1 / 400

What is the flow of electrons in a circuit known as?

Voltage

Current

The flow of electrons in a circuit is known as current. Current is defined as the rate at which electric charge flows through a conductor. It is measured in amperes (A). When electrons move through a wire or any conductive material, they create an electric current, which is essential for powering electronic devices and appliances.

Voltage, on the other hand, refers to the electric potential difference between two points in a circuit, essentially pushing the electrons along. Resistance is the opposition to the flow of current, and it affects how easily electrons can move through a material. Impedance is a broader term that combines resistance with reactance in AC circuits, reflecting how circuits impede current flow under alternating current (AC) conditions.

Understanding these concepts helps clarify the role of current as the actual movement of electrons, making it fundamental to how electrical circuits function.

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Resistance

Impedance

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