NCERT Solution for Class 10 Science Chapter 12
Electricity
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-200
Questions No-3
Calculate the number of electrons constituting one coulomb of charge.
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NCERT Solution for Class 10 Science Chapter 12
Electricity
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-200
Questions No-3
We know that one electron possesses a charge of 1.6 Γ 10β»ΒΉβΉ C.
ππ’ππππ ππ πππππ‘πππ=πππ‘ππ πβππππ/πΆβππππ ππ 1 πππππ‘πππ
=1/1.6Γ10β»ΒΉβΉ=6.25Γ10ΒΉβΈ
So, the number of electrons constituting one coulomb of charge is 6Γ10ΒΉβΈ.
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https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-12/
Charge on one electron, e = 1.6 x 10-19Β C
Total charge, Q = 1 C
Number of electrons, n= Q/eΒ =Β 1C/1.6x10raise to power-19Β = 6.25 x 1018
We know that charge over 1 electron = 1.6 Γ 10β19Β coulomb
Thus, 1.6 Γ 10β19Β C of charge = 1 electron
Therefore, 1 C of charge =Β 1/ (1.6 Γ 10β19) Electrons
= 1019/1.6Β electrons =Β 10Γ1018/1.6Β electrons = 6.25 Γ 1018Β electrons
The elementary charge, which is the charge of a single electron (or proton), is approximately
1.602 Γ 10^19
1.602Γ10^19 coulombs. To calculate the number of electrons constituting one coulomb of charge, you can use the formula:
Number of electrons = Total charge (C)/Charge of one electron (C)
β
Substitute the values:
Number of electrons = 1 C/1.602 Γ10 β ^19 C/electron
β
Number of electrons β 6.242 Γ 10^18 electrons
So, approximately 6.242 Γ 10^18 electrons constitute one coulomb of charge.