What is the definition of an anode in electrical terms?

In electrical terms, the anode is defined as the positive electrode in a circuit. This is where the current flows into a device from the energy source. In electrochemical cells, the anode is the site of oxidation, meaning it is where electrons are released. The anode participates in chemical reactions that result in the flow of electric charge, making it crucial for the functioning of batteries and other electronic devices. Understanding the role of the anode is essential for anyone studying esthetics, especially in relation to equipment that uses electrical currents for treatments.

The other options are associated with different electrical concepts: the negative electrode refers to the cathode, which is where reduction occurs; a neutral electrode does not exist in typical electrical terminology; and a ground electrode is related to grounding in electrical systems, enabling safety and stability rather than being a source of current flow like the anode.