Answer:
[tex]⇒ How \: many \: electrons \: are \: present \: in \: a \\ charge \: of \: 4000? [/tex]
Therefore, 25 electrons will flow for the charge of 4C.
Q = N.e
4000 = N . 1,6 × 10⁻¹⁹ C
N = 2.5 x 10²²
