An electron is placed in an electric field of strength 300 N/C. What is the magnitude of the force the electron experiences? 1.6x10^13 N 2.4x10^13 N 3.2x10^14 N 4.8x10^14 N 6.4x10^14 N A particle of mass 0.005 kg is given a charge of +4.0 µC and is placed in an electrical field that is directed antiparallel to the earth's gravitational field. What is the field strength, expressed in N/C, if it balances the weight of the particle? 1.6 x10^6 2.4 x10^6 3.2 x10^6 4.4 x10^6 4.7 x10^6 Wen I tried to do these questions, I did not even come close to the figure in bold. I thought F = Eq or F = mg/q would be sufficient enough, but I guess not. Can anyone explain how to arrive at each answer? Thanks.