A. Corrosion occurs only at the junction of two metals
B. Corrosion occurs only at the edges of two metals
C. Corrosion decreases with increase in distance from the junction
D. Corrosion increases with increase in distance from the junction
This question was addressed to me in an online quiz.
My question is based upon Eight Forms in chapter Eight Forms of Corrosion of Corrosion Engineering
Explanation: The galvanic effect is the potential difference formed between two or more metals at its junction. It decreases on moving away from the junction. Hence corrosion decreases with an increase in distance from the junction.