The current is defined as the amount of charge Q that passes through a given point of a wire in a time

:

Since I=500 A and the time interval is

the charge is

One electron has a charge of

, therefore the number of electrons that pass a point in the wire during 4 minutes is

electrons
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Answer:
sound water because sound is the most important electronic wave for water
You can’t solve it because you don’t have c in the question
Aware is 3(A) I hope this helps