Question

Why potato turns green when current is passed through it?

Answer 1

It undergoes electrolysis. The process of electrolysis take place because of the starch present in the potato. ... These electrons react with the copper wire which is inserted inside the potato on reaching the positive terminal and hence create a color of the potato becomes greenish blue due to the reaction.

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Answer 2

Question.

Why potato turns green when current is passed through it?

Answer.

the process releases electrons in potato and increases the negative particle.When these negative species reach the other end of copper it reacts with part of copper wire inside potato and make a complex of copper which is green in color.