Question

a current of 10A flows through a conductor for 2minutes if the charge of an electron is 1.6×10^-19c, then calculate the total number of electrons flowing​

Answer 1

Answer:

Explanation:

Current (I)= 10 A

Time(t)= 2 mins = 120 secs

i) Charge flowing through a cros-section= It = (10 X 120) C = 1200C (ANS)

ii) No. of electrons= Charge/ charge of each electron = (1.2 X 103)/ (1.6 X 10-19)= 7.5 X 1020 (ANS)

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Answer 2

Answer:

Charge, Q = 1200 C

Number of electrons,  

Explanation:

It is given that,

Current, I = 10 A

Time, t = 2 min = 120 s

Q = 1200 Coulomb

 Charge of an electron,  

Let n is the total number of electrons. It is given by using quantization of electric charge as :  

Q=ne

n=Q/e

n= 1200/ 1.6×10^-19

n=7.5*10^21 electrons

Hence, this is the required solution.