Which description defines electroplating?

Which description defines electroplating?

• A. A process by which a thin layer is deposited by an electromechanical process
• B. A coating method using heat only
• C. A process of removing metal from a surface
• D. A method of welding metal with electricity

Answer: (A)

Electroplating is depositing a thin layer of metal onto a conductive surface by using electric current in a plating bath. The metal ions in the solution are reduced at the surface, building up a coating as the part acts as the cathode. This electrochemical process allows a uniform thin layer to be applied, improving properties like corrosion resistance, wear, or appearance. The other descriptions don’t fit: heating alone doesn’t create a plated coating, removing metal is etching or stripping, and welding uses electricity to join metals rather than deposit a coating.

Electroplating is depositing a thin layer of metal onto a conductive surface by using electric current in a plating bath. The metal ions in the solution are reduced at the surface, building up a coating as the part acts as the cathode. This electrochemical process allows a uniform thin layer to be applied, improving properties like corrosion resistance, wear, or appearance. The other descriptions don’t fit: heating alone doesn’t create a plated coating, removing metal is etching or stripping, and welding uses electricity to join metals rather than deposit a coating.