A certain particle carries 2.5 × 10^–16C of static electric charge. Calculate the number of electrons present in it.

Given:

Charge on particle = 2.5 × 10^–16C

Charge on electron, = ne

Where

n = number of electrons

e = 1.6× 10^-19 J

n = [2.5 × 10^–16] / [1.6× 10^-19]

n = 1562 electrons

Therefore, the number of electrons present is 1562 electrons.