Which statement about GMAW electrode form is true?

• A. In GMAW, the electrode is a continuous solid wire with no flux
• B. In GMAW, the electrode is a flux-coated wire
• C. In GMAW, the electrode is a wire with flux core
• D. In GMAW, the electrode is a copper rod

Answer: (A)

In GMAW, the electrode is a continuous solid wire that feeds through the gun. The weld is protected by an external shielding gas, so the wire itself doesn’t carry flux. That makes the continuous solid-wire with no flux coating the correct description. Flux-coated or flux-core wires are used in other welding variants (like FCAW), where the flux inside or on the wire provides shielding, not in standard GMAW. A copper rod is not typical for the GMAW electrode. So, the statement describing a continuous solid wire with no flux best matches how GMAW is formed.