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Grade 12Electric Current

A coin is made up of All and weight 0.54gm.It has a square shape and it's diagonal measures 17mm. It is electrically neutral and contains equal amounts of positive and negative charges. The madnitude of these charges is?

KAMIL

9 Years agoGrade 12

1 Answer

deepak

9 Years ago

the molecular mass of al = 27gms

then the no of mol”s of al = 0.54/27=0.02

we know that

1mol of any substance has a +ve charge of +1faraday and a negative charge of -1faraday (1faraday=96485.3 C)

hence the total positive charge in 0.02 mol is +1929.706 C

and

the total -ve charge in 0.02 mol is -1929.706 C

hope this was useful

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