Question

At a distance of 100 km from a small,

electrically charged asteroid, it is found
that there is an electric field of 300 V/m. How much charge does the asteroid
carry?

Answer 1

E = K Q / R^2 electric field due to charge Q

Q = E * R^2 / K = 300 N / C * (10^5)^2 m^2 / (9.0E9 nt-m^2/C^2)

Q = 333 C