Question

(a) Find the electric potential at points a and b for charges of +3.5 nC and -5.2 nC located as shown in the figure. (b) What is the potential difference N for a trip from a to b? (c) How much work must be done by an external agent to move a point charge of +2.50 nC fron a to b? 11.0 cm 11.0 cnm 15.0 cm dl 11.0 cm -5.0 cm (a) Va 318 139.1

HELP with last part!! Cant figure it out!!

Answer 1

I think you made an error in sign only

C. Work=-Q(Vb-Va)

Work= -(2.5*10^-9)*(-139.1-318)

Work= 1.14275*10^-6 Joule