Respostas

2014-02-13T14:32:03-02:00
Resposta

Formula

Q = n.e

Q = carga 4uC = 4.10^-6C
n = numero de eletrons
e = carga do eletron 1,6.10^-19C

 4.10^-6 = n1,6.10^-19
n1,6.10^-19 = 4.10^-6
n = 4.10^-6 / 1,6.10^-19
n = 2,5.10^-6 . 10^19
n = 2,5.10^13 eletrons

Esse ^ significa elevado
1 5 1