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Which of the metallic structure will require more impressed current density for cathodic protection?

Which of the metallic structure will require more impressed current density for cathodic protection? Correct Answer The storage tank of H2SO4

Impressed method current is an external supply of power to provide electrons to metallic structure that needs to be protected. The storage tank of H2SO4 requires the highest current density per sq. feet due to the high corrosiveness of acid.

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