Question

Calculate the number of electrons constituting one coulomb of charge. (Charge of an electron = 1.6 × 10–19

Answer 1

Given :-

• charge of electrons$\rm\:=1.6\times\:{10}^{-19}$

To find :-

• Number of electrons constituting one coulomb of charge.

Solution :-

If charge is 1 C then,

$\rm\:No\:.\:of\:electrons=\dfrac{1}{1.6\times\:{10}^{-19}}\times\:1$

$\rm\:No\:.\:of\:electrons=\dfrac{{10}^{19}}{1.6}$

$\rm\:No\:.\:of\:electrons=\dfrac{10}{1.6}\times\:{10}^{18}$

$\rm\:No\:.\:of\:electrons=6.25\:\times\:{10}^{18}$

Hence,the number of electrons constituting 1 coulomb of charge will be 6.25 × 10¹⁸.

$\green{\bigstar}\:\:\underbrace{\bf\pink{{More\:Information}}}$

❍ Important properties of electric charge

✎ Opposite charges or unlike charges attract each other.It means that a positive charge attracts a negative charge.

✎ Smiliar charges or like charges repel each other.It means that a positive charge repels a positive charge and negative charge repels a negative charge.

• The SI unit of charge is Coulomb (C)