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Q.

Charge on an electron is 1.6 × 10-19 coulombs. No electron passing through the wire per second on flowing of 1 ampere current through the wire is?


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a

0.625×10-19 

b

1.6× 10-19 

c

1.6× 1019 

d

0.625× 1019  

answer is D.

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Detailed Solution

Concept: Ohm’s law states that the current flowing through a conductor is directly proportional to the voltage drop across the conductor.
Using the formula:
The current is defined as rate of flow of charged particle.i.e.
Question ImageHence the charge flown is,
Question ImageHence Question ImageThe charge Question Image is due to electrons, therefore, Question ImageHere Question ImageIf Question Image is number of electrons passing and e is the electronic charge of value Question Image Question ImageThen,
Question ImageUsing this information we see that the number of electrons will be 0.625 x 1019 .
Hence, , the correct Option is 4 .
 
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Charge on an electron is 1.6 × 10-19 coulombs. No electron passing through the wire per second on flowing of 1 ampere current through the wire is?