Question

ESTRAL DE FISICA
01. Calcule a carga elétrica de um corpo (Q) que possui excesso de n=5,4.1012 elétrons. Considere
a carga elementar igual a e = 1,6.10-19 C.
a) 8,64.10-31
b) 86400 C
c) 8,64.107C
d) 8,640.107C
e) 8,64.10
elétrons

Answer 1

$\text{Dados:}\ n=5.4\times10^{12}\ \mathrm{el\acute{e}trons};\ e=1.6\times10^{-19}\ \text{C}.$

$\boxed{Q=ne}\Longrightarrow Q=(5.4\times10^{12})(1.6\times10^{-19})$

$\Longrightarrow Q=8.64\times10^{-7}\ \therefore\ \boxed{Q=8.64\times10^{-7}\ \text{C}}$