Respuesta :

The charge of a single electron is -1.6 x 10^(-19) C. To figure out the total number of excess electrons, divide the net charge by the charge of a single electron:

-6.4 x 10^(-17) / -1.6 x 10^(-19) = 400

There are about 400 excess electrons on the sphere.

Answer:

There are 400 electrons on the sphere.

Explanation:

Net charge on the sphere = N =[tex]-6.4\times 10^{-17} Coulombs[/tex]

Number of electrons = n

Charge on an electron = e = [tex]-1.602\times 10^{-19} Coulombs[/tex]

[tex]N=n\times e[/tex]

[tex]n=\frac{-6.4\times 10^{-17} Coulombs}{-1.602\times 10^{-19} Coulombs}[/tex]

[tex]n=399.500\approx 400[/tex]

There are 400 electrons on the sphere.