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 × 10⁻¹⁹ C.
𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑒𝑙𝑒𝑐𝑡𝑟𝑜𝑛=𝑇𝑜𝑡𝑎𝑙 𝑐ℎ𝑎𝑟𝑔𝑒/𝐶ℎ𝑎𝑟𝑔𝑒 𝑜𝑛 1 𝑒𝑙𝑒𝑐𝑡𝑟𝑜𝑛
=1/1.6×10⁻¹⁹=6.25×10¹⁸
So, the number of electrons constituting one coulomb of charge is 6×10¹⁸.
For more answers visit to website:
https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-12/
We know that charge over 1 electron = 1.6 × 10–19 coulomb
Thus, 1.6 × 10–19 C of charge = 1 electron
Therefore, 1 C of charge = 1/ (1.6 × 10–19) Electrons
= 1019/1.6 electrons = 10×1018/1.6 electrons = 6.25 × 1018 electrons
Charge on one electron, e = 1.6 x 10-19 C
Total charge, Q = 1 C
Number of electrons, n= Q/e = 1C/1.6x10raise to power-19 = 6.25 x 1018
The elementary charge, which is the charge of a single electron (or proton), is approximately
1.602 × 10^19
1.602×10^19 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)
Substitute the values:
Number of electrons = 1 C/1.602 ×10 − ^19 C/electron
Number of electrons ≈ 6.242 × 10^18 electrons
So, approximately 6.242 × 10^18 electrons constitute one coulomb of charge.