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Multiple Choice: Choose the letter of the correct answer and write your answer in a separate sheet of paper. 1. Which of the following statements best describes Coulomb's Law in terms of the force of attraction and repulsion between two-point charges? A. The force is directly proportional to the sum of the magnitude of charges. B. The force is directly proportional to the cube of the distance between charges. C. The force is directly proportional to the product of the magnitude of charges. D. The force is directly proportional to the square of the distance between them. 2. What is the amount of force in coulomb between 2-point charges 10uC and 54C respectively placed at 150cm? A. 0.2 N B. 0.5 N C. 2 N D. 10 N 3. Which of the following best describes value of k in Coulomb's Law? A. It depends on the magnitude of charges. B. It depends on the distance between charges. C. It depends upon the medium between two charges. D. All the above 4. What will be the amount of electrical force if the distance between two charges will be doubled? A. It will be the same. C. It will be reduced by half. B. It will be doubled as well. D. It will be reduced by one-fourth. 5. How will you position two charges to attain the strongest electric force between two charges? A. far apart C. constant everywhere B. closer together D. moving randomly 6. Which is the correct SI unit for electric force? A. Newton B. Newton/Coulomb C. Coulomb D. Pascal 7. What test charge will you use to determine the direction of the electric field? A. neutral B. positive C. negative D. radioactive8. What type of material that will allow charges move freely? A. Conductors B. Insulators C. Radioactive D. Neutral 9. What can you infer, if two identical electroscopes, one initially charged while the other is initially neutral are connected in a thin rod and latter both electroscopes are now charged? A. the rod is a conductor C. the rod is an insulator B. they have opposite charges D. one electroscope is grounded 10. Which of the following forces hold atoms together? A. magnetic B. gravitational C. electric D. tension 1 1. Which method of charging is being described when an object is rubbed against another object? A. discharges B. conduction C. friction D. induction 12. What will happen if two like charges placed near each other? A. it will neutralize C. it will discharge B. it will attract D. it will repel 13. Which of the following is being describe in this statement "the region around a charged object where the object's electric force interacts with other charged objects"? A. electric force B. static discharge C. induction D. electric field 14. Consider two statements: (A) The force with which two charges interact is not changed by the presence of the other charges. (B) Electric force experienced by the charge particle due to number of fixed point charges are vector resultant of the forces experience due to individual charges. What can you conclude in the given statements? A. A and B both are correct C. A is correct only B. B is correct only D. A and B both are wrong 15. What Law in physics states that "charges are neither created nor destroyed but only transferred from one material to another"? A. Conservation of Energy C. Conservation of Charges B. Conservation of Mechanical Energy D. Conservation of MomentumInstructions: Read each question carefully. Choose the letter of the correct answer in your answer sheet. 1. What will happen if two different charges are place near each other? A. attract B. repel C. neutralize D. discharges 2. How will you produce electric charges between two bodies? A. sticking B. rubbing C. oiling D. passing AC current 3. Metal such as copper and silver can be charge by induction while plastic materials cannot, why it is not possible for plastic? A. an insulator does not easily conduct charges B. a conductor does not easily conduct charges C. a neutral material will readily blocks charges D. an insulator readily attracts charges 4. What is the conventional direction of electric field? A. positive to negative C. no specific direction B. negative to positive D. cannot be determined Page 20 of 23 5. Where does an electric field terminates? A. at positive charge C. at negative charge B. neither positive nor negative D. both at positive and negative 6. What do we call the region around a charge q in which it exerts a force on a test charge? A. electric field B. electric force C. test charge D. electric field lines 7. An electric field due to a positive charge is represented by the diagram at the right. Between which of the following two points does the electric field do zero work on a moving charge? A. A and B C. B and C B. C and D D. D and E 8. Who demonstrated the two types of electric charges by conducting experiments with electricity using the Leyden Jar? A. Alessandro Volta C. Charles Agustin de Coulomb B. William Gilbert D. Benjamin Franklin 9. A constant electric field directed along the positive x-axis has a strength of 2.0 x 10:N/C, how much electric force is being exerted on a proton in the field? A. 3.2 x 10-16 N, along the -X-axis C. 3.2 x10-16 N, along the +x-axis B. 32 N , along the -x-axis D. 32 N, along the +x-axis10. Which of the following illustrations best describes electric field lines of two charges equal in magnitude and sign? A. B. D. As per Coulomb's law, what will be the force of 11. F = k 1 192 attraction or repulsion between two-point charges? A. it is directly proportional to the cube of the distance B. it is proportional to the product of the magnitude of charges C. it is proportional to the square of the distance between them D. it is inversely proportional to the sum of the magnitude of charges 12. Which of the following statement best describes induction? A. it creates a temporary and opposite charge B. it creates a permanent and same chare C. it creates a temporary and same charge D. it creates a permanent and opposite charge Page 21 of 23 13. What kind of materials do not readily conduct electric charges? A. Conductor B. Superconductor C. Insulator D. Neutral 14. What is the amount of force in coulomb between the 2-point charges 10 C and 5uC respectively placed at 150cm? A. 0.2 N B. 0.5 N C. 2 N D. 10 N 15. "The electric charge of an isolated system remains constant (is conserved)", which law in physics is being defined in the statement? A. Coulomb's Law C. Superposition Principle B. Electric Field Lines D. Law of Conservation of Charges