Question

An oil drop as 6.39*10^-19 charge find out the number of electrons in this oil drop

Answer 1

Answer:

4 electrons

Explanation:

Charge of one electron = -1.6 × 10^-19

Charge of x electrons = -6.39 × 10^-19

Charge of x electrons = -6.39 × 10^-19 / -1.6 × 10^-19

Which is equal to 4 electrons