MCAT Piysics Topical Practice Tests: Electrostatics & Magnerism S1. Which type of electromagnetic (EM) wave travels through space the slowest? A. Visible light B. Ultraviolet light C. Gamma rays D. All EM waves travel at the same speed As a proton moves in the direction of the electric field lines, it is moving from A. high potential to low potential and losing electric potential energy B. high potential to low potential and gaining electric potential energy potential to high potential and gaining clectric potential energy C. low D. low potential to high potential and retaining electric potential energy Which of the following requires a measure of t A. Joule 53. ime? B. Watt C. Volt D. Coulomb 54. If an object is characterized as electrically polarized: A. its internal electric field is zero B. it is a strong insulator C. it is electrically charged D. its charges have been rearranged 55. Two positive charges g and a-3.4 x 10″”c are located 103 m away from cach other, and point P is exactly between them. What is the magnitude of the electric field at point P? A. 0 N/C B. 10-1 N/c C. 6.8 x 10- N/C D. 1.7 x 10 N/C 56. Two equally-charged spheres of mass I g are placed 2 cm apart. When released, they begin to accelerate at 440 m/s. What is the magnitude of the charge on each sphere? (Use Coulomb’s constant k-9 × 109 N·m2/C2) A. 80 nC B. 65 nC C. 140 nC D. 100 nC 57. Which of the following is an accurate statement? A. A conductor cannot carry a net charge B. The electric field at the surface of a conductor is not necessarily parallel to the surface C. If a solid metal sphere carries a net charge, the charge distributes uniformly throughout D. If a solid metal sphere carries a net charge, the charge will move to the sphere surface Copyright © 2018 Sterling Test Prep. Any duplication is illegal. 135