A proton (charge +1.6 * 10^-19 C) moves on a path perpendicular to the direction of a uniform electric field of strength 3.0 N/C. How much work is done on the electron as it moves 15 cm? a. 4.8 * 10^20 J b. -4.8 * 10^-20 J c. 1.6 * 10^-20 J d. zero choose an answer and show your work please.