Question

Qual a carga elétrica que obtemos em 20 10 ¹² elétrons, sabendo-se que a carga elementar vale 1,6.10-¹⁹c?

Answer 1

$\large\boxed{\begin{array}{l}\rm Q=n\cdot e\\\rm Q=20\cdot10^{12}\cdot1,6\cdot10^{-19}\\\rm Q=32\cdot10^{-7}\\\rm Q=3,2\cdot10^{-6}\,C\end{array}}$