Electric Fields/Forces...Do Electrons Have Negative Charge?

Question

A metal sphere has a charge of +8.0 mC. What is the net charge after 6.0 x10^13 electrons have been placed on it?

I was mainly wondering if the sign on the charge of electrons has to be negative since electrons correspond to negative charge.


Also, any help checking my process of solving the equation would be appreciated:
I used the equation q=Ne to find the charge of the electrons in Coloumbs, where e= 1.60 x10^-19 and N equals the number of electrons. Then I converted the 8.0 mC to Coloumbs and added the two together. My answer was 1.76 x 10^-6 C, but would be different if the charge on the electrons was negative.

Thanks!

Answer 1

Electrons do have a negative charge.
-1.602 × 10^-19 Coloumbs according to the source.

Answer 2

electron charge is -ve.

best of luck - Mike