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.