What is the direction and magnitude of an electric field that supports the weight of a free electron near the surface of Earth? Mass of an electron = 9.11×10-31 kg Negative Charge of an electron = 1.6×10-19 C 5.58×10^-11 N/C 2.55×10^-11 N/C 6.66×10^-11 N/C 7.25×10^-11 N/C