What is the the direction and magnitude of an electric field that exerts a 4.80x10-17 N westward force on an electron. (Hint: remember from last semester that F=ma. The mass of the proton can be found in your textbook in Appendix C.) O 7.68 N/C pointing toward the east O 0.333 N/C pointing toward the west O 7.68 N/C pointing toward the west 300 N/C pointing toward the east 300 N/C pointing toward the west