Filler metal deposition rates will increase as the welding current:

• A. Decreases
• B. Stays constant
• C. Increases
• D. Fluctuates

Answer: (C)

More current means more heat input at the arc, which melts the filler metal faster. In welding processes that use a consumable filler (like MIG or stick welding), increasing current raises the rate at which the filler wire is melted and transferred into the weld pool, so more filler metal is deposited per unit time. This means the deposition rate goes up as current goes up, within the process limits. It won’t stay fixed or inherently fluctuate just from changing current, though excessive current can cause defects or instability if other settings aren’t adjusted.