1. A very small charge (5.0 nC) is at the origin of an axis system. A second charge (-2.0 nC) is at the position x = 3m, y = 0. What is the electric

1. A very small charge (5.0 nC) is at the origin of an axis system. A second charge (-2.0 nC) is at the position x = 3m, y = 0. What is the electric potential at x = 0, y = 4m?

a. 25 v

b. 18 v

c. 8 v

d. 4 v

2. Which of the following points is equipotential with x = 2m, y = 0 if the charges in the system are -10C at the origin and +10C at x = 4m, y = 0?

a. x = 2m, y = 2m

b. x = -2m. y = 0

c. x = 0, y = 2m

d. x = 0, y = -2m