Define corrosion potential and describe its significance for metal corrosion in an electrolyte.

• A. E_corr is the open-circuit potential where cathodic currents balance anodic currents; it indicates corrosion tendency and potential for attack.
• B. E_corr is the maximum external potential that prevents corrosion.
• C. E_corr is the potential where only anodic current flows.
• D. E_corr is the potential of the cathodic electrode.

Answer: (A)