What is the name of an electrical device that serves as a conductor and applicator of electricity to certain areas of the body?

The electrical device that functions as a conductor and applicator of electricity to specific areas of the body is known as an electrode. Electrodes are essential in various esthetic and therapeutic treatments, as they facilitate the transfer of electrical currents to the skin and underlying tissues. This can enhance the effectiveness of treatments such as microcurrent therapy, galvanic, and other modalities used for skin rejuvenation or muscle stimulation. By using electrodes, practitioners can precisely target areas in need of treatment, allowing for improved results in a safe and controlled manner.

The other options provided do not fulfill this specific role. A volt meter is used to measure electrical potential but does not conduct electricity. Amperage refers to the amount of electrical current flowing in a circuit, but it is not a device used for application. A transformer is a device that changes the voltage of electrical energy but, like a volt meter, does not serve the purpose of applying electricity to the body.