Problem: Magnesium bars are connected electrically to underground iron pipes to serve as sacrificial anodes.(b) A 12-kg Mg bar is attached to an iron pipe, and it takes 8.5 yr for the Mg to be consumed. What is the average current flowing between the Mg and the Fe during this period?

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Magnesium bars are connected electrically to underground iron pipes to serve as sacrificial anodes.

(b) A 12-kg Mg bar is attached to an iron pipe, and it takes 8.5 yr for the Mg to be consumed. What is the average current flowing between the Mg and the Fe during this period?