Which term refers to an electrical current that occurs when two different or dissimilar metals come together?

Which term refers to an electrical current that occurs when two different or dissimilar metals come together?

• A. Galvanic
• B. Gold
• C. Filler
• D. Ceramic

Answer: (A)

Two dissimilar metals in contact form a galvanic couple. Their different electrode potentials cause electrons to flow from the more active metal to the less active one when there’s a conductive path, creating an electrical current known as a galvanic current. This describes the electrical flow produced by metal contact in a conductive environment. The other options aren’t about an electric current resulting from metal contact: gold is simply a metal, filler is a material used to fill gaps, and ceramic is a non-metallic material. Galvanic is the term that fits the phenomenon.

Two dissimilar metals in contact form a galvanic couple. Their different electrode potentials cause electrons to flow from the more active metal to the less active one when there’s a conductive path, creating an electrical current known as a galvanic current. This describes the electrical flow produced by metal contact in a conductive environment. The other options aren’t about an electric current resulting from metal contact: gold is simply a metal, filler is a material used to fill gaps, and ceramic is a non-metallic material. Galvanic is the term that fits the phenomenon.