1. In the figure, point A is a distance L away from a point charge Q. Point B is a distance 4L away from Q. What is the ratio of the electric field at B to that at A, E_B/E_A?

2. What is the electric flux passing through a Gaussian surface that surrounds a +0.075 C point charge?

3. Three charges are positioned as indicated in the figure. What are the horizontal and vertical components of the net force exerted on the +15 C charge by the +11 C and+13 C charges?

Horizontal component:

Vertical component: Use the following figure to answer questions 4 and 5:

Two positive charges are located at points A and B as shown in the figure. The distance from each charge to the point P is a = 2.0 m.

4. Which statement is true concerning the direction of the electric field at P? Please choose an answer and explain your choice.

a. The direction is toward A.

b. The direction is toward B.

c, The direction is directly away from A.

d. The direction makes a 45 angle above the horizontal direction.

e. The direction makes a 135 angle below the horizontal direction.

5. If we were to change both charges into negative charges, which statement would now be true about the direction of the electric field at P? Please choose an answer and explain your choice.

A) The direction is toward A.

B) The direction is toward B.

C) The direction is directly away from A.

D) The direction makes a 45 angle above the horizontal direction.

E) The direction makes a 135 angle below the horizontal direction.