Question: A steel surface 10 cm 100 cm is coated with a 0.002-cm-thick layer of chromium. After one year of exposure to an electrolytic cell,

A steel surface 10 cm × 100 cm is coated with a 0.002-cm-thick layer of chromium. After one year of exposure to an electrolytic cell, the chromium layer is completely removed. Calculate the current density required to accomplish this removal.

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