The electrode used in MIG welding is consumed as the weld is made.

• A. True
• B. False
• C. Sometimes
• D. Never

Answer: (A)

In MIG welding, the electrode is a consumable filler metal. The welding wire is fed continuously through the contact tip and melted by the electric arc, depositing metal into the weld joint. As you weld, the wire is gradually consumed and becomes part of the weld metal, which is why you need to keep feeding more wire to maintain the arc and deposition. This consumption is a defining feature of MIG with solid or flux-cored wire, unlike processes that use a non-consumable electrode. Therefore, the statement is true.