Question

Current used in electroplating is:

• A. DC
• B. AC
• C. both DC and AC
• D. none of these

Hint:

AC current alternates direction and cannot produce consistent deposition needed for electroplating.

Answer 1

The Correct Option is A

Electroplating requires the use of direct current (DC) because DC provides a unidirectional flow of electric current. This steady flow causes metal ions in the electrolyte to move consistently toward the cathode (negative electrode), where they gain electrons and deposit as a thin, uniform metal layer. If alternating current (AC) were used instead, the direction of current would continuously reverse, causing metal ions to deposit and then dissolve alternately. This would prevent uniform plating and could lead to inefficient or no metal deposition. Thus, DC is essential for controlled and effective electroplating.