1. Which of the following diagrams represents the field of force around a negative point charge? a. d. b. e. C. 2. The diagram below shows two point charges, B and C, and the electric field lines in the region around them. A B C Which one of the following statements is true? a. A negative point charge placed at point A will move toward the left. b. The charges on both B and C are negative. c. The charges on both B and C are positive. d. The electric field is strongest nearest point B. e. A negative point charge placed at point A will move toward the right.3. Which of the following diagrams most accurately depicts the field between two oppositely charged plates? a. - - - - d. - - b. e. C.4. An object with charge +q experiences an electric force FE when put in a particular location in the electric field E . The positive charge +q is removed and an object with charge -4q is placed in the same location in the electric field. This charge would feel an electric force of a. -2FE d. 4FE b. -FE e. -FE 2 4 C. -2F'E 5. The electric field 0.50 m from a small sphere with a positive charge of 7.2 x 10 5 C is a. 2.6 x 106 N/C [inward] d. 2.9 x 10 4 N/C [inward] b. 2.9 x 10 4 N/C [outward] e. 2.6 x 10' N/C [outward] c. 1.3 x 10' N/C [outward] 6. The electric field 0.50 m from a small sphere with a negative charge of 2.4 x 10 8 C is a. 8.6 x 102 N/C [inward] d. 4.3 x 102 N/C [inward] b. 4.3 x 102 N/C [outward] e. 7.8 x 1012 N/C [outward] c. 9.6 x 10 8 N/C [outward] 7. The magnitude of the electric field between the plates of a parallel plate capacitor is 3.5 x 104 N/C. If the charge on each plate were to decrease by a factor of four, the magnitude of the electric field would a. increase by a factor of four d. decrease by a factor of four b. increase by a factor of sixteen e. not be affected c. decrease by a factor of sixteen. If point charge +q was absent, the electric eld at point B would be E. What is the electric eld between the two point charges, +q and q, at point B which lies at the midpoint between the two charges? .1 +1 a. 2E ri ht d. E l g l [left] 2 b. 0 e. E . [ght] 2 c. 2E [left] . The sign of the electric potential difference depends on the sign of the charge the magnitudes of the distances from the charge the magnitude of the electric potential of the positive plate the magnitude of the electric potential of the negative plate and the distance between the plates 6. the magnitude of the distance from the charge and the sign of the charge 9-9 9'! 10. Two 2.0-kg spheres each carry a charge of 2.0 C. How does FE compare with F? a. FE = Fg b. F. > FE C. FE > F. d. If the charges on the spheres are the same, then F. > FE, but if the charges are opposite then FE > F. e. FE and F cannot be compared without knowing the distance between the spheres..11. A 2.4 x 10'3-C positive test charge is placed between two plates. The potential difference between two parallel metal plates is 30 V. Plate A is positive and plate B is negative. Which plate has a higher electric potential? a. plate A b. plate B c. Plates A and B have the same potential. d. If the positive charge is placed closer to the positive plate, then plate A will have a greater electric potential. e. If the positive charge is placed closer to the negative plate, then plate B will have a greater electric potential