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Question

If a current of 1.5 ampere flows through a metallic wire for 3 hours, then how many electrons would flow through the wire?

A
2.25×1022 electrons
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B
1.13×1023 electrons
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C
1.01×1023 electrons
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D
4.5×1023 electrons
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Solution

The correct option is A 1.01×1023 electrons
According to this Faraday's first law, the chemical deposition due to the flow of current through an electrolyte is directly proportional to the quantity of electricity (coulombs) passed through it.

So, Q=I×t=1.5×3×60×60=16200C

Charge on one electron =1.601×1019C
Now,
16200C charge is on 1×162001.601×1019 electrons =1.01×1023.

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