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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?

Respuesta :

The average current flowing between the Mg and the Fe during this period is 2.59 × 10^15 A.

What is electric current?

The rate of flow of electric charge is called electric current.

The SI unit of electric current is amphere.

Current = charge × time

Given,

Time = 8.5 × 365 × 24 × 3600

= 2.68 × 10^8 sec

Given mass of magnesium = 12 kg = 12000 g

Molar mass of magnesium = 24 g

As we know that,

Current = charge × time

Charge = n × F × given mass/ molar mass

= 2 × 96485 × 12000/ 24

= 9.6485 × 10^7

Current = 9.6485 × 10^7× 2.68 × 10^8

= 25.85 × 10^15

= 2.59 × 10^16

Thus, we calculated that the average current flowing between the Mg and the Fe during this period is 2.59 × 10^15A.

learn more about electric current:

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