Question

Calculate the number of electrons constituting one coulomb of charge.

Answer 1

Step 1: Given data

To figure out how many electrons make up one coulomb of charge,

$\mathrm{e}=1.6\times {10}^{-19}C$

$\therefore \mathrm{q}=1\mathrm{C}$

Step 2: Concept used

An electron's charge is negative and is $1.6\times {10}^{-19}\mathrm{coulomb}$.

Electrons constituting one coulomb of charge,

$\mathrm{q}=\mathrm{ne}$

where,

$q$ = charge

$e$= number of electrons

Step 3: Find the number of electrons

$\mathrm{n}=\frac{\mathrm{q}}{\mathrm{e}}$

$\mathrm{n}=\frac{1}{\left(1.6\times {10}^{-19}\right)}$

$\mathrm{n}=6.25\times {10}^{18}\text{electrons}$

$\cong 6\times {10}^{18}\text{electrons}$

Therefore, the number of electrons in one coulomb of charge is $6\times {10}^{18}\text{electrons}$.