Answer to Question #186329 in Physics for Cris

Question

3. Describe the motion of a – 2 mC charge placed in a region with an electric field of 1.5 N/C. 

a. The charge will accelerate along the direction of the electric field. Its potential energy 

will decrease during the motion

b. The charge will accelerate in direction parallel to the electric field vectors, but in the 

opposite direction. Its potential energy will decrease during the motion.

c. The particle will move at constant velocity in a direction perpendicular to the electric 

field vector. Its potential energy will not change during the motion.

d. The particle will remain at rest. Its potential energy will increase over time.

4. Two spherical objects, one with a radius r and another with a radius 3r, each carries a charge Q 

uniformly distributed over the entire surface. Which of the two stores more electrical energy?

a. The smaller sphere

b. The larger sphere

Answer 1

3) Answer: b. The charge will accelerate in direction parallel to the electric field vectors, but in the opposite direction. Its potential energy will decrease during the motion.

4) Answer: a. The smaller sphere